危险品题库(客舱)搜题用什么软件最好-j9九游

时间:2024-06-24 08:15:56


in the following four items, which is not a favorable way to start a all talk with a stranger?

on which occasions are you likely to have a all talk with others?

which of the following aspects are often covered on the topic of hometown?

which of the phrases can you use to tell about where you are from?

which may be used to greet people you meet for the first time?

which ones of the following may be used to start a conversation with a stranger on campus?

which of the following types of educational institutions does a college providing its students job-specific trainings belong to?

which of the following is not a place for teaching and learning in the university?

what other names do you have to refer to a selected course?

what are the three levels of credentials (n.学历,文凭)?

a compulsory course is also called ________________or _______________.

what does “take a rain check” mean?

what do you say to finally confirm your agreement on the time and place of an appointment?

which of the following expressions refers to “a cinema in the open air”?

which of the following expressions means “续集”?

which of the following sentences does not mean the movie is funny?

what is a “star-studded movie”?

(多选)in a sentence, which ones of the following types of words are usually not stressed?

in what ways do you read a magazine that does not interest you much?

if you need to read something very slowing and reflectively, you read it ______.

(多选)which of the following types of materials do you read for learning?

(多选)which of the following types of materials do you read for fun?

(多选)if the book has been borrowed, what might the librarian say?

(多选)if the book is in the library, what might the librarian say?

(多选)if you want to reserve the book that has not been returned yet, what might you say?

(单选)which one of the following is a "track event"

(单选) which one of the following is not a "field" event?

(单选) what do we call "溜冰场" in english

(多选)which of the following are not classified as athletics?

(多选) which ones of the following belong to "x-sports" (short for extreme-sports)?

(单选) which of the following is the most proper greeting when you feel happily surprised about meeting someone on the street?

(单选)which one of the following can not be used to answer the question "good morning, how did you sleep last night?"

(单选)which of the following is not normally associated with shops or shopping?

(单选) which one of these is not a popular online-shopping website?

(单选) which of the following is not a suitable phrase to use when talking about ’returning goods or services’:

(单选) which one of the following shopping modes appeared last in the chronological order?

(多选) which ones of the following are advantages of online shopping?

hi, long time no see, where have you been hiding? answer:___________________________________________. how is life treating you? answer:___________________________________________. oh, i almost forgot. i heard you got a new boyfriend\ girlfriend. what is he\she like? answer: ___________________________________________. i’d like to see you two together sometime. answer:___________________________________________. where are you heading? i’m asking because i saw those shopping bags in your hand. going back home from shopping? answer:___________________________________________. too bad, what’s wrong with the shirt? answer:___________________________________________. where did you buy it? answer:___________________________________________. what are the return policies like? can you get a full refund? answer:___________________________________________. i really feel sorry. you’d better hurry up. the mall is closing in an hour. answer:___________________________________________. see you soon. answer:___________________________________________.

what is a food guide pyramid?

what is a vegan?

when you spill the beans, you reveal the truth.

'take someone with a pinch of salt' means to trust someone completely.

when you write ‘in a nutshell’, you mean to write/put something simply and concisely.

'an apple a day keeps the doctor away!' tells you that eating fruit helps to keep you healthy.

'you are what you eat!' explains the connection between food and health.

if something ‘sells like hotcakes’, it sells very well.

a 'art cookie' is used to refer to an intelligent person.

(单选)in some restaurants it is expected that the customer will leave a ‘tip’. typically, what percentage tip should the customer leave?

(多选)unpleasant food can be described as:

(多选)in places like pubs, cafes and fast food restaurants, you usually request someone to repeat what they have said by using short fixed expressions such as:

(多选)when conversing with people in english, sometimes we find ourselves in situations where we have to ask someone to repeat what they have said when:

(多选)nice food can be described as:

(多选)food without a strong flavour can be described as:

(单选) which one of the following expressions means "不屑"?

(单选) which one of the following words means "容忍" when used as a verb.

(单选) what does "you are telling me" mean?

(多选) which one of the following expressions means "i agree with what you said".

documentary: a tv programme or film that shows a story or situation objectively and truthfully.

drama: a real life situation which may be exaggerated yet believable.

game show: a tv show in which contestants compete for prizes by playing games of knowledge or chance.

sitcom: a humorous drama based on situations that might arise in day-to-day life.

soap opera: a drama, typically performed as a serial on daytime tv, featuring the daily lives and problems of a group of people.

current affairs show: a show concerned with the latest news or latest events happening in a particular region, country etc.

reality tv show: a tv show in which members of the public or celebrities are filmed living their everyday lives or undertaking specific challenges.

(单选)which option shows the words in the correct sequence/order?

(单选)which of the following is not a synonym for “love”?

(单选)discourse markers are short phrases we can use to

(多选)which of the followings are synonyms for “hate”?

my favoriate tv show is called ________________________. (name of the show) it is aired ________________________________________. (time & channel) why am i a super fanatic of this show? well, if you ask me, i have a long list of reasons to show you. to start from , _______________________________. (reason 1) also, _______________________________. (reason 2) there is one more reason which should never be left out. _______________________________. (reason 3) i really want to give this show a thumb-up. it's as good as it can be.

which of the following terms are not usually associated with the internet?

which of the following are not names of popular internet services?

which of the following are not internet services?

which of the following terms are usually associated with the internet?

which of the following symbols are usually associated with the internet?

which of the following are controversial opinions?

which of the following are ‘differing’ opinions?

which of the following expressions do not show an acknowledgement of someone’s opinion?

(单选) which of the following idioms means “让我心烦” in chinese?

(单选) which one of the following idioms means "即兴发挥,见机行事" in english?

(单选) which one of the following music genres refers to the music from movies or tv dramas?

(单选) which expression is equivalent to the chinese “成名曲”?

(多选) which ones of the following are essential members of a band?

(多选) which of the following adjectives could be best used to describe rock music?

(多选) which ones of the following musical instruments could be listed under the "wind instrument" category?

(多选) which ones of the following musical instruments could be listed under the "string instrument" category?

(多选)which ones of the following adjectives could be best used to describe classical music?

(多选) which ones of the following could be used to express “流行音乐榜”?

(多选)which ones of these interjections could be used to express amazement?

(多选) which ones of these interjections could be used to express anger?

if you ask me, has many benefits, as long as . first, as far as i’m concerned, ______________. second, to my mind, _______________________. while it is true that , i’d say this doesn’t mean . personally, . so, in my opinion, is (not) . i believe that as long as , ___________.

(单选)which of the following is not a real famous celebrity?

(单选)which of the following words do not mean talented?

(单选)which of the following words do not mean outrageous?

(多选)which of the following are not true about lady gaga?

(多选)which of the following celebrity/career combinations are correct?

(多选)which of the following are not true about david beckham?

(多选)which of the following are important points for linking‘ideas’?

(单选)what is the main reason that bill gates and his wife were considered to be professional role models?

(单选)which of the following terms best explain expressions such as:‘beatlemania’or‘lisztomania’?

(多选)which of the following phrases are negatively associated with celebrities?

(单选) which one of the following expressions means "一审"?

(单选)which one of these behaviours, in serious cases, could elicit a legal punishment?

(多选) which ones of the following are crimes of stealing?

(多选) which ones of the following expressions mean ""

(多选) which ones of the following are crimes against children?

(单选) what is a person who attacks someone violently in a street in order to steal money from them.

(多选) which ones of the following mean "律师"?

(多选) which ones of these are important details when a crime case is reported to the police?

(多选) which ones of the following expressions signal "the next step"?

(单选) which one of the following expressions means the same as chinese tunic suit?

(单选)which one of the following expressions means "卫衣"?

(单选) which one of the following expressions means "休闲裤"?

(单选) which one of the following clothing styles means "学院风,学生风"?

(单选) which one of the following expressions means "格子的"?

(多选) (单选) which ones of the following quantifiers(量词) could be used with clothes?

(多选) which ones of the following words and expressions are synonymous to "fashionable"?

(多选)which ones of the following are the english equivalents to the chinese expression "名牌"?

(单选)which one of the following means "平头"?

(单选) how to say "我想修一下头发"?

(多选) which ones of the following expressions could you use before paraphrasing others' meanings?

(单选) which of the following expressions is a name for toys of cartoon or tv characters?

which category of toys does "jigsaw puzzle" fall into?

(单选) which one of the following is "过山车"?

(多选) which ones of the following are traditional toys?

(单选) which one of the following is the expression for "跳房子"?

(单选) which one of the following is the expression for "拨绳子"?

(多选)which ones of the following are expressions for "拔河"

(多选) why do we need pauses in our speeches?

(单选)which one of the following words could be used to mean "something bothering that lingers in your mind"

(单选) which one of the following words sugests the person is very proud?

(单选) which one of the following words could be used to mean "shouting angrily"?

(单选) if someone is very sick, in what kind of way is he likely to talk?

(多选)which of the following are the main disadvantages of the motor car?

(多选)which of the following are the main advantages of the motor car?

(多选)which of the following are the most important advantages of walking and cycling?

(多选)which of the following are the main disadvantages of walking and cycling?

(多选)which of the following is a phrase not normally associated booking a train ticket?

(多选)which of the following is a phrase not normally associated with city bus travel?

(多选)how can city planners improve the quality of city life?

(多选)big transportation infrastructure projects (e.g. high-speed railways) bring wider economic benefits to an area. which of the following are not economic benefits?

(多选)big transport infrastructure projects (e.g. high-speed railways) also create economic dienefits. which of the following are not economic dienefits?

(多选)what was the main reason that ‘by’ was late?

(多选)which of the following reasons were not given for city transport problems?

(单选) which one of the following is the english equivalent for “无形文化遗产”?

(多选) which ones of the following are forms of fine art?

(多选) which ones of the following should you pay attention to when going to a symphony?

(多选) which ones of the following are english equivalents to “皮影戏”?

(多选) which ones of the following are traditional stage-art forms in china?

(多选) when making an introduction of something, why is it important to focus on the main features?

(多选)which ones of the following are major ways to support a point?

(单选) which one of these architectures is usually used for display and could be dientaled once it is no longer needed?

(多选)which ones of the following are ancient style architectures?

(多选)which ones of these are names of western architectural styles?

(多选) which ones of these are features of baroque architectures?

(多选)which ones of the following words refer to high-rise architectures?

(单选)which one of the following expressions could be used to mean "安慰某人"

(多选)which ones of the following expressions mean "a good friend"?

(多选)which of the following are the types of friendship mentioned in this unit?

(单选 )which of the following adjectives of personality does not mean (is not a synonym of) “angry”?

(多选)which of the following adjectives of personality does not mean (is not a synonym of) “confident”?

(多选)which of the following adjectives of personality does not mean (is not a synonym of) “shy”?

(单选)which of the following “mind-map branches” for the main topic "friendship" are in the correct order?

(单选)which of the following best describes "brainstorming" as discussed in this unit?

(单选)a “single parent family” is one where

(单选)what is the best way to describe a “nuclear family”?

(单选) an “extended family” is

(多选)which of the following are generally considered to be a ‘family type’?

(多选)which of the following terms are not usually associated with family types?

which of the following words are not synonyms of, or do not have a similar meaning to, “inspirational”:

which of the following words/expressions have a similar meaning to “bitter”?

(单选)which of the following is not an aspect of the ‘tabular approach’?

(多选)which of the following are note-taking methods described in this lesson?

(单选 ) which word not a synonym of “selfish” when describing children’s attitudes?

(单选)which set of words best fits the following sentence: “confuciani is the _________ that has _________ chinese _________ from several thousand years.”

(单选) filial piety is best described by which option?

describe a person you admire. this person can be either someone you know in your life or a celebrity. include details about who this person is, how you knew this person and why this person is admirable to you. you should speak for at least 2 minutes.

describe a place you would like to recommend to others to visit you should say: where it is when you first went there state at least 2 reasons why you would like to recommend this place. you should speak for at least 2 minutes.

describe an experience which gave you a lesson. you should say when it happened where it happened who were with you what happened and explain what kind of lessons you learned from this experience. you should speak for at least 2 minutes.

it was proclaimed by many leaders in the it industry that ai (artificial intelligence) will take many jobs away from people. in which areas do you think ai will replace human work? what implications does this trend have on our life? you should speak for at least 4 minutes.

下列哪种给药方式在药物到达血液循环前必先通过肝脏

苯妥英钠能加速华法林的代谢使其抗凝效果降低,原因是

有关生物利用度的说法,正确的是

长期服用可乐定降血压,停药次日血压明显回升,属于药物的

药物作用的两重性指

治疗外伤引起的剧烈疼痛时,皮下注射morphine 10 mg与皮下注射pethidine 100 mg的疗效相同,因此

拮抗药(阻断药)是指对受体

乙酰胆碱的主要消除方式是

毒扁豆碱属于何类药物?

治疗过敏性休克的首选药物是

禁用propranolol的疾病是

不具有下列哪一项作用?  

苯妥英钠抗癫痫作用的主要原理是

增加l-dopa抗帕金森病疗效,减少其不良反应的药物是

氯丙嗪抗精神病作用的主要机制

强镇痛药(阿片受体激动药)应当严格控制应用,其主要理由是容易引起

噻嗪类利尿药的作用部位

长期应用可能升高血钾的药物是

下列那种药物有阻断na 通道的作用

螺内酯的特点是:

噻嗪类利尿药的禁忌证是:

长期使用利尿药的降压机理主要是?

下列关于acei抗慢性心力衰竭的叙述,不正确的是

acei或者arb与哪些药物联合用药可以引起血钾升高

下列哪种药物可加重糖尿病病人有胰岛素引起的低血糖反应:

acei宜用于

硝苯地平的作用机理主要为?

降压作用最平稳、持久的钙离子通道阻滞剂是:

在长期用药的过程中,突然停药易引起严重高血压,这种药物最可能是:

变异型心绞痛可首选:

、硝酸甘油、硝苯地平治疗心绞痛的共同作用是:

硝酸甘油抗心绞痛的主要机理是

硝酸酯类舒张血管的机制是

为克服硝酸酯类耐受性,可采取的措施不包括

强心苷作用机制是

强心苷减慢房颤患者的心室率原因是

quinidine的电生理作用是

治疗窦性心动过速首选药是

下例哪项不属于抗心律失常药的基本电生理作用

下列哪个解热镇痛抗炎药具有抗血栓作用

下列那项不是阿司匹林的禁忌症

糖皮质激素抗炎作用的基本机制是

糖皮质激素用于严重感染的目的在于

长期应用糖皮质激素可引起

胰岛素的适应证有

能促进胰岛β细胞释放胰岛素的降血糖药是

关于氮芥的说法错误的是

关于环磷酰胺的说法错误的是

关于顺铂以下说法错误的是

以下哪项不属于拓扑异构酶类抗肿瘤药物

作用于egfr的小分子激酶抑制剂是

以下哪项不是抗菌药物的作用机制

青霉素耐药机制为

青霉素适宜治疗下列哪种细菌引起的感染?

与红霉素相比,林可霉素突出的抗菌特点是

氨基糖苷类抗生素的抗菌谱不包括

氨基糖苷类抗生素消除的主要途径

以下关于四环素类抗生素说法错误的是

哪类抗生素可用于脑膜炎奈瑟菌鼻咽部带菌者根除治疗

下列哪类药物容易通过血脑屏障?

以下关于药物与血浆蛋白结合的描述,错误的是

弱酸性药物过量中毒,为了加速排泄,应当

按一级动力学消除的药物,达到稳态血药浓度的时间长短取决于

药物的治疗指数是指

药物的副作用是指

药物引起最大效应50%所需的浓度(ec50)用以表示

激动药是指对受体

能够治疗青光眼的药物是

分布在骨骼肌运动终板上的受体是

有机磷酸酯类中毒时产生m样症状的原因是

可使皮肤、黏膜血管收缩,骨骼肌血管扩张的药物是

治疗癫痫持续状态的首选药物是

溴隐亭治疗帕金森病,是由于

氯丙嗪的抗精神病作用主要是通过

禁用于分娩止痛,是由于

拮抗醛固酮作用的药物是

通过抑制k -na -2cl共同转运系统发挥利尿作用的药物包括 

关于螺内酯叙述下列不正确的是: 

利尿药初期的降压机制可能是?

下列哪项不是acei的不良反应

以下关于at1受体阻断药的叙述,不正确的是

以下关于硝苯地平的概述,错误的是?

降压作用最平稳、持久的钙离子通道阻滞剂是:

哌唑嗪引起降压反应时较少引起心率加快的原因:

硝酸甘油抗心绞痛的主要机理是

下例关于强心苷描述正确的是

下例关于强心苷对心肌电生理特性的影响错误的是

抗心律失常药的基本电生理作用不包括

lidocaine对哪一种心律失常效果最好

有关propranolol的抗心律失常作用机制,下述哪一项是错误的

阿司匹林的抗炎作用机制是

糖皮质激素抗炎作用的基本机制是

糖皮质激素用于慢性炎症的目的在于

糖皮质激素类药物与蛋白质代谢相关的不良反应是

胰岛素的不良反应有

能促进胰岛β细胞释放胰岛素的降血糖药是

以下哪项是β内酰胺类抗菌药物的作用机制

头孢类抗生素中肾毒性最小的是

以下哪项不是细菌产生耐药性的机制

以下不属于四环素类抗生素不良反应的是

不能使用青霉素治疗的细菌为

大环内酯类抗生素的抗菌谱不包括

铜绿假单孢菌尿道炎的首选用药为

以下不属于喹诺酮类药物抗菌作用机制的是

关于环磷酰胺的说法错误的是

博来霉素最严重的不良反应是

关于顺铂以下说法错误的是

分子靶向药物贝伐单抗的作用靶点是

分子靶向药物伊马替尼的作用靶点是

人们常说“心理学家可以猜透人心”,这实际指的是心理学可以()人的行为。

描述、解释、预测、控制人的行为是()的研究目的。

“形具而神生,好恶喜怒哀乐藏焉。”这是()的观点。

心理是人脑对()的主观反映。

联结大脑左右两个半球的部位是()。

霍桑实验中的“福利实验”属于()。

人本管理的核心思想是()。

行为主义心理学的创始人是()。

当出现一个新的心理学概念,想探索其内涵结构时,用()方法比较合适。

要避免“观察者偏见”,有效的方法是()和()。

人本主义代表人物是()和()。

想象可以天马行空,脱离客观现实。

催眠的目的是让人说出内心的秘密。()

被试间设计可能会因为练习效应而产生结果偏差。

程序化教学,机器学习就是应用了行为主义心理学的理论和观点。

人刚刚能够感受到某个变化所需的最小量被称为()。

在香水柜台工作的售货员,工作一段时间后觉得自己鼻子“失灵”了,这种现象是()。

()是将外界物理能量转化为人类大脑可以识别的神经编码的过程。

在知觉的过程中,()凸显在前方,具有边缘和轮廓。

感觉信息已变化,但知觉依然会对信息重组,发现事物不变的本质,这表现了知觉的()。

“一目十行”指的是注意力的()。

用来研究注意力偏向和轨迹的常用仪器是()。

眼动仪实验最后的产物是()。

“有限理性”思想的提出者是()。

同一个问题用不同语言产生“损失”或者“获益”的表达,依然会使人产生对风险的不同态度。这种现象被称为()。

让夜晚作业的工人晚上沐浴在()色的灯光下,白天带上()色眼镜,有助于他们调节生物钟。

“前景理论”的提出者是()。

声强超过听觉的上感觉阈限(120分贝),带来的是痛觉。

错觉和环节一样都是知觉的扭曲,是知觉的特殊形式。

研究者发现,人们有追求社会公平的偏好,甚至以损失个人利益为代价。

认知和情绪的关系是()。

提出人类的六种基本情绪为“好恶喜怒哀乐”的思想家是()。

人类表达情绪时,最主要的表现途径是()。

大多情况下,语速展现出个体的()。

以下不属于a型性格人的特征的是()。

情绪是伴随着认知过程产生的对外界事物的()。

认知失调理论的提出者是()。

对自己或他人的情绪理解、回应、掌控、处置的能力被称为()。

多元智力理论的提出者是()。

任何一种情绪的表达都是()、()、()通力合作的结果。

根据海德的归因理论,将自己的成功进行(),有利于获得积极情绪。

面部表情在不同、不同文化的成员之间具有一致性。

在表达情绪时,面部表情比动作表情更加真实可信。

适度压力可以激发出高绩效。

情绪管理的方法在不同人之间具有普适性。

人际关系的本质是一种()。

“近水楼台先得月”说明交往双方的()在人际关系建立过程中有重要作用。

()规定了男女两性的适当行为,违反会受到文化的谴责。

信任的社会意义不包括以下()。

人的信任建立在()基础之上的。

受到他人影响而改变自己行为或信念的现象被称为()。

人们看到一个美女,往往会认为她幸福程度高、职业地位高,这属于()。

进化心理学认为,()和()是造成两性差异的主要原因。

研究发现,当领导者表现出()等特质时,下属更愿意信任领导。

研究发现,人们认为女性的外貌吸引力程度与她的能力成正比。

双方共同心理领域在自己个人信息中占比越大,说明双方在这段关系中的卷入程度越深,人际关系越牢固。

女性比男性更加重视亲密关系,对情绪的理解能力更强。

道歉对于修复归因于稳定因素的失信行为是有效的。

只有信任方认为,第三方监控是被信任方自愿引入的时候,第三方监控作为信任修复的手段才真正有效。

研究发现,创业失败之后,企业“苟延残喘”的时间与创业者的情绪成本呈()关系。

个体有意向他人透露有关自己的、有意义的信息的过程,被称为()。

以下不属于“爱情”的是()。

“爱情三元论”的提出者是()。

爱情中,引起的主要因素是()。

以下可以增加爱情承诺度的因素不包括()。

能够让人感受到“温暖的稳定的爱情”的激素是()。

爱情的三大心理特征是()。

完美爱情包含三个成分,分别是()。

临床心理学发现,反刍是抑郁症的前兆,所以创业者应尽可能避免反刍。

情绪可以传染,压力情绪也可以在人际间传递。

“吊桥实验”说明了,爱情的产生过程包括了生理反应与心理体验。

自我接纳他人的程度可以代表爱情承诺度的高低。

()气质类型的人适合当医生。

同一个团队成员气质类型需要优化组合,最好是()。

内向者与外向者的区别在于()的不同。

1921年,荣格在()中提到了外向和内向的概念。

智力的核心是()。

多元智力理论认为,智力的多个因素之间是()。

最早对人与人之间的智力差异进行测量的是()。

一个6岁的孩子可以完成9岁孩子要求的智力测验任务,那么,他的智商是()。

气质有好坏之分,多血质比较好,抑郁质比较差。

生活中常说的“江山易改,禀性难移”指的就是气质具有稳定不易改变的特点。

内向性格不利于社交,所以应该尽可能改正。

单一能力大发展也可以被称为天才。

加德纳认为,智力不是一种能力,而是一组能力。

韦克斯勒智力测验相比斯坦福比奈量表的一个不同在于增加了操作测验分数。

砌体工程用的块材不包括

一般情况下烧结砖砌体可耐受多少度的高温

我国各类砖砌块的抗压强度一般为10-15mpa,最高为

下列哪项是砌体结构的特点

砌体结构主要用于下列那些方面

在抗震设防烈度6度区,烧结普通砖砌体住宅可建到8层。

无筋砌体抗拉、抗弯、抗剪强度较高,抗震性能高。

1. 砌体工程所使用的材料包括 和 。

1.提高空心砖的 ,减小 能够节约材料,降低造价,间接提高砌体结构的抗震 性能。

砌体工程用的块材不包括( )。

一般情况下烧结砖砌体可耐受多少度的高温( )

在抗震设防烈度6度区,烧结普通砖砌体住宅可建到多少层

标准砖的尺寸为

下列哪项是砌体结构的特点( )

砌体结构主要用于下列那些方面( )

在抗震设防烈度6度区,烧结普通砖砌体住宅可建到8层。( )

无筋砌体抗拉、抗弯、抗剪强度较高,抗震性能高。 ( )

1. 砌体工程所使用的材料包括 和 。

1.提高空心砖的 ,减小 能够节约材料,降低造价,间接提高砌体结构的抗震 性能。

标准砖的尺寸为

块体通常占砌体结构的( )%以上

我国块体主要分为以下哪些种类

无筋砌体包含下列哪几种

砖墙一般采用下列哪几种砌筑方式

下列哪种属于配筋砖砌体

砖砌体水平灰缝的砂浆饱满度不得低于

烧结普通砖砌体中,一般8块砖长加上8个灰缝的长度为( )

砌体的抗拉强度主要由( )决定

施工砌筑质量由下列哪些因素决定

砖砌体标准试件尺寸为( )

砖砌体水平灰缝的砂浆饱满度不得低于( )

烧结普通砖砌体中,一般8块砖长加上8个灰缝的长度为( )

砌体的抗拉强度主要由( )决定。

我国块体主要分为以下哪些种类

无筋砌体包含下列哪几种

砖墙一般采用下列哪几种砌筑方式

下列哪种属于配筋砖砌体( )

影响砌体抗压强度的主要因素有哪些

砌体结构应按照不同受力特征和使用条件因地制宜、就地取材选择砌块和砂浆。

在关系模型中,关系要符合一个最基本的条件,即每个分量必须是不可分的数据项。该条件描述的是( )。

关系规范化中的删除异常是指( )。

关系模式r的整个属性组是码,则r满足的最高范式至少是( )。

已知关系模式r(a,b,c,d,e)及其函数依赖f={a→d, b→c, e→a},该关系模式的候选码是( )。

x→y,当下列哪一条成立时,称为平凡的函数依赖( )。

设有关系模式r(a,b,c,d),其数据依赖集:f={(a,b)→c,c→d},则关系模式r的规范化程度最高达到( )。

在关系数据库设计中,设计关系模式是数据库设计中( )阶段的任务。

在数据库设计中,将er图转换成关系数据模型的过程属于( )。

关系数据库的规范化理论主要解决的问题是( )。

数据库设计中,确定数据库存储结构,即确定关系、索引、聚簇、日志、备份等数据的存储安排和存储结构,这是数据库设计的( )。

在数据库物理设计完成后,进入数据库实施阶段,下列选项中不属于实施阶段的工作是( )。

给定关系模式r(a, b, c, d, e),如果存在依赖:a→b,bc→d,de→a,则该关系模式的码为( )。

两个实体性之间的联系有一对一联系、一对多联系和多对多联系。而单个实体型内的联系只存在一对一、一对多联系,不存在多对多联系。( )

在e-r图向关系模型转换的过程中,无论是一个1:1的联系,一个1:n的联系,还是一个m:n的联系,都可以转换为一个独立的关系模式。( )

关系模式的分解不唯一。( )

关系数据库管理系统查询处理4个阶段的执行顺序为( )。

视图的消解属于查询处理中的( )。

简单的全表扫描方法的特点是( )。

如果两个表都在连接属性上建立了排序,连接操作的启发式规则是( )。

查询选修了2号课程的学生姓名,可以用下面几个关系代数表达式表示,效率最高的为( )。

查询树是用于( )的工具。

物理优化中,连接操作的启发式规则执行顺序为( )。 (1)如果一个表在连接属性上有索引,则可以选用索引连接算法 (2)如果2个表都已经按照连接属性排序,则选择排序-合并算法 (3)如果i和ii都不是用,其中一个表较小,则可以选用hash join算法 (4)使用嵌套循环算法,并选择其中较小的表作为外表

连接操作是查询处理中最常见也是最耗时的操作之一。数据库管理系统中实现连接操作的算法包括( )。

在集中式数据库中,查询执行的开销主要包括( )。

物理优化的目标是选择高效合理的操作算法或存取路径。以下哪些方法可用于物理优化( )。

下列选项对在物理优化中选择操作的启发式规则理解正确的是( )。

建立索引需要额外的存储代价,但使用索引扫描一定比简单的全表扫面效率要高。( )

代数优化的目标是选择高效合理的操作算法或存取路径。( )

对于基于启发式规则中的选择操作,一旦处理的关系较小,即使选择列上建有索引,也使用全表顺序扫描。( )

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