有利于分娩的骨盆是
雌激素和孕激素的协同作用表现在
关于月经，说确的是
关于子宫的位置与形态，正确的是
符合正常卵巢临床特征的是
符合输卵管解剖特点的是
女性外生殖器不包括
符合解剖特点的是
属于雌激素的生理作用是
关于子宫的描述，正确的是
胎儿身长45cm，体重2600g，皮下脂肪发育良好，毳毛明显减少，指（趾）甲已达指（趾）间，根据这些信息推断胎龄是
患者女性，28岁，因停经35天就诊，平素月经规律，4～5天/28～30天。患者结婚1年多，未采取避孕措施。妇科检查示宫颈软，着色，子宫稍大，双侧附件（-），考虑妊娠。能在最早的时间诊断妊娠的方法是
患者女性，28岁，因停经35天就诊，平素月经规律，4～5天/28～30天。患者结婚1年多，未采取避孕措施。妇科检查示宫颈软，着色，子宫稍大，双侧附件（-），考虑妊娠。该患者尿妊娠试验（ ），此化验所查的激素是
患者女性，26岁，孕1产0，末次月经为2013年5月4日，预产期是
患者女性，25岁，结婚2年未孕，月经周期规律，现停经40天，近1周觉胀痛，尿妊娠试验（±），基础体温曲线示高温相已达26天，最可能的诊断是
“某孕妇现孕30周，长时间仰卧后，出现血压下降表现，主要原因是
妊娠早期孕妇产生尿频症状的原因是
关于孕妇下肢痉挛的护理，正确的是
关于胎动的说法，正确的是
关于母体妊娠中期常见心理社会反应的描述，正确的是
患者女性，32岁，孕1产0，产前检查发现缺铁性贫血，护理内容正确的是：
关于妊娠期常见症状的描述，正确的是
关于受精与着床的描述，正确的是
患者女性，32岁，孕1产0，孕32周，主诉小腿及踝部有水肿，休息后可好转，腰背痛、便秘，偶有下肢肌肉痉挛。血常规检查示贫血。对该患者进行健康指导时，内容正确的是
临产后子宫收缩的特点，下列哪项是错误的
下列哪种现象不属于临产的诊断依据
临产后检查了解胎头下降程度时，作为标志的是
混合臀先露的两下肢姿势是
初产妇枕先露时，开始保护会阴的时间是
关于生理性缩复环，正确的是
初产妇，枕前位，宫口开全，胎头颅骨最低点在坐骨棘水平下3cm，矢状缝与出口前后径一致，胎心135次/分，下列哪种处理是正确的
初产妇，24岁，孕39周，食欲正常，昨晚20:00起有腹部阵痛入院，入院后一夜未睡，今晨查房见其精神疲乏，宫缩10～20秒/10～35分钟，宫缩强度弱，肛查胎位loa，未入盆，宫口开1指，前羊膜囊不明显，骨盆测量无异常，最恰当的处理是
下列哪项体征不包括在apgar评分内容中
胎儿娩出后10分钟，出血量多，外露脐带延长，这一征象表明
经产妇，产后第1日，自诉下腹痛。查有低热，出汗，咽无充血，无恶心、呕吐、腹泻，脐下2横指处触及一硬块上界，白细胞11.0×109/l，中性粒细胞0.75，可能的诊断是
正常产褥期妇女不应出现
符合产褥期母体生理变化的是
关于产褥期的临床表现，正确的是
有关恶露的描述，正确的是
产后血性恶露持续时间一般是
护士在对产妇进行母乳喂养指导时，告知母乳喂养的益处，正确的是
李某，经产妇，昨日经顺产一正常男婴，目前诉说胀痛，下腹阵发性轻微疼痛。查胀痛，无红肿，子宫硬，宫底在腹正中，脐下2指，出血同月经量。该产妇胀痛首选的护理措施是
初产妇，产后第2日开始发热，体温38℃左右，已持续10小时。子宫收缩好，无压痛，会阴切口无红肿疼痛，恶露正常无异味，肿胀有硬结，发热原因可能是
符合产褥期产妇身体变化特点的是
正确描述产褥期妇女子宫复旧的是
关于产褥期妇女的护理，您的学习作品。
急性胎儿窘迫最明显的表现是
新生儿出生1分钟apgar评分为4分，对该患儿的处置首选
患者女性，孕1产0，产程顺利，宫口开全1小时，胎头已拨露，胎心监护为早期减速，应采取的处理方式是
慢性胎儿窘迫的处理原则是
可作为胎儿窘迫的评估指标的是
患者女性，31岁，孕2产0，孕42 2周，诊断为过期妊娠，入院后予缩宫素引产，2小时后宫缩过强，胎心168次/分，羊水ⅱ度污染。关于该患者出现胎儿窘迫的处理，正确的是
患者女性，37岁，孕2产0，孕40周，因羊水ⅱ度粪染，行产钳助娩术，新生儿出生1分钟时心率90次/分，呼吸20次/分，不规则，四肢肌张力略小，吸痰时有轻度喉反射，躯干红而四肢青紫。对该新生儿的处理，正确的是
关于高危妊娠的处理，正确的是
患者女性，32岁，孕1产0，孕38周，主诉胎动减少1天，因胎儿宫内窘迫入院。关于该患者分娩时的护理措施，正确的是
不属于新生儿重度窒息的临床表现是
某初产妇，停经50天出现少量流血，伴轻微下腹痛。妇科检查发现该产妇宫颈口关闭，子宫增大，约孕50天大小，妊娠试验阳性。该孕妇最可能的诊断是
患者女性，29岁，平素月经规律，现停经2个月，腹痛伴流血多于月经量1天，子宫如孕2个月大小，见胚胎组织堵塞宫口。对该患者最恰当的处理是
自然流产的染色体异常大多是
患者女性，29岁，平素月经规律，现停经2个月，腹痛伴流血多于月经量1天，子宫如孕2个月大小，见胚胎组织堵塞宫口。该患者最恰当的诊断是
输卵管妊娠最常见的部位是
护士在对输卵管妊娠患者进行护理评估时，下列叙述正确的是
属于异位妊娠的病因的是
导致流产的原因包括
对自净作用具有直接影响的激素是
毛滴虫适宜生长繁殖的环境ph值为
急性盆腔炎患者宜采取的是
宫颈与黏膜可见散在的红色斑点，分泌物呈泡沫状，应考虑的诊断为
用雌激素治疗有显著疗效的疾病是
滴虫炎分泌物的典型特点是
患者女性，36岁，已婚，主诉外阴瘙痒。检查见分泌物多而稀薄，呈灰黄色泡沫状，擦去分泌物见黏膜有散在的红点，根据该患者的临床表现，需做的检查是
滴虫炎的治愈标准是
外阴假丝酵母菌病患者进行灌洗，宜选择的溶液是
患者女性，45岁，因胆道感染入院，应用抗生素10天。近1周外阴奇痒，坐卧不宁。妇科检查：黏膜红肿，附着白色膜状物，擦除露出红肿黏膜面。最可能的诊断是
外阴假丝酵母菌病患者治疗后的最佳复查时间是
外阴假丝酵母菌病的易感人群包括
关于慢性子宫颈炎症的物理治疗，说法错误的是
慢性盆腔炎的临床表现包括
对急性盆腔炎患者进行处理时，正确的是
当输入信号频率为fl或fh时，放大电路电压增益的幅值约下降为通带内水平增益的 。
某放大电路在负载开路时的输出电压为4v，接入3kw的负载电阻后，输出电压为3v。说明放大电路的输出电阻为 。
已知某信号源内阻为1kw，未接放大电路时测得信号源电压为10mv，接入放大电路后测得放大电路输入端口电压为8mv，说明放大电路的输入电阻为 。
已知某放大电路的最大不失真输出电压范围是－10v～＋10v，若放大电路的通带电压增益是40db，则放大电路不失真放大时的输入电压范围是 。
信号不失真的放大在时域中表现为任何一点的幅值放大的程度完全相同。
只要放大电路的传输特性曲线是线性的，就不会出现失真现象。
用放大电路放大正弦波信号时，只有可能出现非线性失真，不可能出现频率失真。
放大电路的增益只能保证在一定频率范围内与频率无关。
放大电路中的符号“^”表示接大地的“地”。
放大电路输出信号增加的能量来自放大电路的工作电源。
同一个放大电路对不同信号源或带不同负载时，实际的放大能力常常是不同的。
放大电路只有电压增益、电流增益、互阻增益和互导增益四种增益形式。
1.5.1, 1.5.2
理想运算放大器的参数是开环电压增益avo = ，输入电阻ri = ，输出电阻ro = 。
放大电路中，运算放大器的反相输入端为虚地，而 放大电路中，运算放大器的两个输入端对地电压是不为零的。
欲将方波电压转换为三角波电压，应选用 。
欲将方波电压转换为尖脉冲电压，应选用 。
欲将输入电压信号放大-100倍，应选用 。
电路如图8所示，假设运算放大器是理想的，则图（a）av = vo/vi = ，ri = ；图（b）av = vo/vi = ，ri = 。
电路如图9所示，假设运算放大器为理想的，那么vo = f(vi) = 。
理想运算放大器构成的电路如图10所示， = 。
加减法运算电路如图11所示，设运算放大器是理想的，则输出电压和输入电压的关系式为 。
电路如图12所示，假设运算放大器均为理想的，则= 。
电路如图13所示，开关s闭合时电路增益 ＝ ；开关s断开时电路增益 ＝ 。
在运算放大器构成的线性运算电路中一般均引入负反馈。
在线性运算电路中，集成运放的反相输入端均为虚地。
集成运放在开环情况下一般都工作在非线性区。
放大电路中的运算放大器只要是理想的，就一定存在虚短和虚断。
电压跟随器的电压增益为1，所以其对信号放大没有贡献。
半导体中空穴的移动实际上反映了半导体中 的移动。
n型半导体中的多数载流子是 ，而p型半导体中的多数载流子是 。
pn结内电场方向是由 。
pn结正偏是指 。
二极管正偏时应重点关注 ，反偏时应重点关注 。
齐纳二极管正常稳压时，工作在 状态。
点亮发光二极管应加 ，光电二极管正常工作时应加 ，变容二极管正常工作时应加 。
已知某二极管处于正向导通状态，其导通电流为0.5 ma，那么，此时二极管在室温（300k）下的小信号模型参数rd = 。
设简单硅二极管基本电路如图所示，已知r = 1kw。当vdd =10v时，分别应用理想模型和恒压降模型，求得的电流id分别为 和 ；当vdd =1v时，再分别应用理想模型和恒压降模型，求得的电流id分别为 和 。
12v电池的充电电路如图所示，用二极管理想模型分析，若vs是振幅为24v的正弦波，则二极管流过的峰值电流为 ，二极管两端的最大反向电压为 。
电路如图所示，若vs是有效值为220v的正弦波电压，rl = 100w，二极管采用理想模型分析，则二极管的最高反向工作电压为 ，整流电流应为 。
电路如图所示，d1，d2为硅二极管，当vs = 6sinwt v时，用恒压降模型分析电路时，输出电压vo的波形是 。
二极管电路如图所示。输入电压只有0v或5v两个取值。利用二极管理想模型分析，在vi1和vi2电压的不同组合情况下，输出电压vo的值是 。
电路如图所示，d为硅二极管，若vdd = 2 v，r = 1 kw，正弦信号vs=50sin(2p´50t) mv。则静态（即vs= 0）时，二极管中的静态电流为 ，vo的静态电压 ；动态时，vo的交流电压振幅为 。
稳压电路如图所示。若vi =10v，r =100w，齐纳二极管的vz =5v，iz(min)=5ma，iz(max)=50ma，那么负载rl的变化范围是 。
半导体二极管温度升高时，将明显增大由本征激发出的少数载流子的浓度，因此对二极管反向截止特性会产生更明显的影响。
对于实际的二极管，只要正偏电压大于零，二极管就导通。
二极管简化模型将二极管的i-v非线性特性近似成了线性或分段线性的关系。
通常硅二极管的反向饱和电流小于锗二极管的反向饱和电流，正向管压降低于锗二极管的正向管压降。
在使用齐纳二极管时，必须加限流电阻。
1.测试系统的基本要求，输入、输出可测（已知），则通过输入、输出估计系统的（ ）。
2.定常线性系统是指可用（ ） 描述的系统。
3.静态方程是指测试装置处于静态测量时，输入量x和输出量y不随时间而变化，各阶微分等于（ ）。
4.非线性度即是（ ）偏离拟合直线的程度，用非线性误差表示。
5.线性系统的主要性质有（ ）、（ ）、（ ）、（ ）、（ ）。
1. while ________ with the station’s real djs, les taught himself their posture and hand movements on the control panel.
2. a national ________ is someone who, by the mere mention of his name, will remind people of his country.
3. only those who uphold a committed and focused will and spirit, will find their ________ successful.
4. you must insist that students give a truthful answer ________ with the reality of their world.
10. the purpose of many such all-scale adaptations is to ________ the enterprise forward.
9. les stayed close in case there was some way he might help ________ his coworker’s distress. he also worried that the illness was sure to doom this broadcast.
8. the crime was ________ by evidence of child abuse and the fact that the victim was very young.
7. good television programs should ________ to different types of interest and taste among the public.
6. upon graduation, he became a garbage collector. the ________ opportunities for his future looked slim to others, but not to les.
5. fortunately, there is a more ________ attitude towards other religions in most parts of the world today.
which of the following factors can contribute to success?
what rules should we follow to develop a good example essay?
which of the following are famous speeches made by winston churchill?
the basic structure of an argumentative writing usually consists of three parts: idea-displaying, argumentation and conclusion.
denotation is the thing that is actually described by a word while connotation refers to the feelings or ideas it suggests.
1. each member of the alliance agrees to take such action as it ________ necessary, including the use of armed force.
2. some researchers feel that certain people have nervous systems particularly ________ to hot, dry winds. they are what we call weather-sensitive people.
3. in spite of the ________ economic forecasts, manufacturing output has risen slightly.
4. professor hawking is ________ as one of the world’s greatest living physicists.
5. please yze it ________ the principles discussed.
6. i could see that my wife was ________ on having that fur coat, whether i approved of it or not.
7. then, somewhere in my proximity, i overheard a still calm voice ________ the panic.
8. his head popped up, then a wave crashed over him and he disappeared for a moment; i had to________.
9.then, with ________, i saw a thin arm waving weakly a few yards away.
10. i felt strong arms lift me. i ________ not only from the sea onto the secure rocks of the jetty - but to my salvation.
which of the following are usual techniques to enhance narration?
which of the following are useful tips to write good narrative writings?
while making inferences, readers can reason out the implications of the author with the help of _____.
which of the following are useful suggestions on how to overcome fear?
which of the following are useful tips on how to read a narrative writing?
1. i went to a school where we had to speak french all the time, but outside school hours i ________ to english.
2. her ________ was rarely wrong where such things were concerned, but there was always the off chance.
3. audrey felt it was wicked that billions of children were deprived ________ simple joys and drowned in overwhelming misery.
4. mrs. cummins, very ________ in her duties, watched the whole process with a sensitive eye.
5. she believed deeply in the ideology that all people share in the duty to care for those in need. audrey hepburn was always ready to lead ________ example.
6. just thinking about all the ________ i received about my dramatic weight loss, and the proud way my huand looked when we went out in public, made me feel that what i had done was worthwhile.
7. we just go on in our habitual ways until we are stopped short by one of the many illnesses that ________ our civilization today.
8. a soft evening breeze brought a ________ ell from the company sink.
9. but she refused to allow her spirit to be _______ by the desperate reality of her young life.
10. the young boy tried to immerse himself ________ film in any way possible.
which of following are true of biography?
which of the following are true about how to write a biography?
which of the following are true of facts?
which of the following are true of opinions?
which of the following are true about how to distinguish facts from opinions?
1. babies have very immature immune systems and rely upon breast milk to ________ this deficiency as it contains protective factors.
2. there are some things which no one would wish to know for their own sake, some subjects which have no possibility of ________ general significance.
3. you ________ and absorb information from many sources while still being faithful to nature.
4. in studying children's pictures, a wide variety of ________, personal, and cultural factors needs to be taken into account.
5.it was very quiet and the noises from the wood became ________, as if the wood itself had suddenly moved down nearer the track.
6. just as women now demand for themselves greater freedom to express different ________ of themselves, so too do some men, although not nearly so many of them.
7. for the first time in human history, we can ________ the sun and move from one hemisphere to another in a single day.
8. the larger lesson, though, is that our thoughts are ________ the familiar.
9. having a companion might have safeguarded me from some of the problems. but it would have ________ other opportunities.
10. if you ________ something, just remember: you don’t live there, you can leave anytime, and you’ll never have to deal with this again!
which of the following are the benefits of travel?
how to develop a travel essay?
how helpful is the prior knowledge and experience of good readers?
which of the following are famous travelers in ancient china?
1. somehow she rose over her excitement, though, and concentrated all she could on the task ________.
2. recently a number of voluntary initiatives have sought to ________ a sense of belonging to the community on the part of young people.
4. this chapter cannot claim to clear up the confusing ________ of approaches but it will offer some guidance.
5. there is always a moment in time when we can make a decision whether or not to ________ our anger.
6. most mothers, if forced to leave home for a few days, would ________ their children to the pet dog for safekeeping rather than hand them to their lawful father.
7. workers are therefore more ________ to dedicate more time to working, taking too little leisure rather than too much.
8. but while laborers are counting down the hours, workers are energized and focused, taking ________ pleasure in the task at hand.
9. no matter what sort of work a person does, if we give it our best each day, we’re starting a tradition for our children to ________.
10. i went into the next shop, and what i heard ________ my heart. yes, the old man had passed away.
which of the following are useful tips to develop a comparison/contrast essay?
which of the following are signal words showing addition?
what types of signal words do we usually use?
which of the following should be considered to develop a narrative writing?
which of the following are signal words showing cause-and-effect?
1. it is assumed that the interior of the cap was ________ soft leather.
2. residents remember all too well the floods of 2010 that caused ten billion dollars in damage and forced thousands to ________.
3. on a spring moonlit night, birds are singing, the air is ________ with the fragrance of flowers.
4. beyond the realm of information technology, the accelerated pace of technological change in virtually every industry has created entirely new businesses, wiped out others, and produced a ________ demand for continuous innovation.
5. he is now engaged in a probe into the ________ of matters.
6. if more than one item is ordered, they will be ________ in separate packages.
7. unable to ________ the danger, i start running toward the forest, in the direction of the falling bombs.
9. when the planes disappear, we return to the wagon and my mother wipes the sweat from my grandfather’s ________ face.
10. for the poor during the wartime, winter is a disaster, a ________ and constant threat.
there are many things in the world for us to describe. what can we describe?
we should always keep in mind that the essence of a descriptive essay is to make the readers _____ what we are writing about.
which of the following are useful tips we can follow when writing a descriptive essay?
where can we usually find the main idea sentence in a paragraph?
which of the following are important elements for the main idea of each paragraph in narrative writings?
1. without no income to deposit, sue’s checking account _______ into negative balances.
2. the economic slump that so many people suffered through _______ in the united states.
3. the two things are the same in outward form but different ________.
4. it was all the money sue had left after her unemployment benefits had ________.
5. he slumped down on his bed and ________ a brief and painful fit of crying.
6. when sue received her last unemployment check, she felt a wave of profound grief.
8. many men, women and children sought ________ in their neighboring country, where they had to live in camps, during their own country’s civil war.
9. improved consumer confidence is ________ to an economic recovery.
10. oil companies in the u.s. are already beginning to feel the pressure. refinery workers and petroleum-equipment-manufacturing employees are being ________.
which types can the economic system be ided into?
what can a cause-and-effect essay focus on?
which of the following transitions are commonly used in cause-and-effect essays?
which of the following are common ways to develop definitions?
how to avoid spending too much on shopping?
1. economics has usually been ________ to politics, and politics have generally been dominated by locali and authoritariani (独裁主义).
2. fat ________ the blood vessels, making your circulation bad and therefore creating many problems.
3. another area where chinese and westerners clash is that most westerners don’t believe ________ must show permanent gratitude to parents.
4. the shop is expected to generate roughly $4 million in ________ sales, bringing the airport roughly $400,000 to $600,000 a year.
5. the fact is that chinese parents do things that seem ________ , unimaginable, even illegal, to opinionated westerners .
6. waller was argumentative, ________, and sometimes outspoken, but he had a sense of humor and he retained a childlike delight in science throughout his life.
7. the ________ is that the child is tender, not strong, and as a result western parents behave very differently than chinese parents.
9. my family has helped me out as much as they can, but i need to do it on my own and ________ my daughter.
10. this was sydney’s top jazz club in the 1950s, which ________ both the worst coffee and the most daring music in town.
each member of the alliance agrees to take such action as it ________ necessary, including the use of armed force.
some researchers feel that certain people have nervous systems particularly ________ to hot, dry winds. they are what we call weather-sensitive people.
in spite of the ________ economic forecasts, manufacturing output has risen slightly.
professor hawking is ________ as one of the world’s greatest living physicists.
please yze it ________ the principles discussed.
while ________ with the station’s real djs, les taught himself their posture and hand movements on the control panel.
a national ________ is someone who, by the mere mention of his name, will remind people of his country.
only those who uphold a committed and focused will and spirit, will find their ________ successful.
you must insist that students give a truthful answer ________ with the reality of their world.
fortunately, there is a more ________ attitude towards other religions in most parts of the world today.
i went to a school where we had to speak french all the time, but outside school hours i ________ to english.
her ________ was rarely wrong where such things were concerned, but there was always the off chance.
mrs. cummins, very ________ in her duties, watched the whole process with a sensitive eye.
she believed deeply in the ideology that all people share in the duty to care for those in need. audrey hepburn was always ready to lead ________ example.
babies have very immature immune systems and rely upon breast milk to ________ this deficiency as it contains protective factors.
there are some things which no one would wish to know for their own sake, some subjects which have no possibility of ________ general significance.
you ________ and absorb information from many sources while still being faithful to nature.
in studying children's pictures, a wide variety of ________, personal, and cultural factors needs to be taken into account.
it was very quiet and the noises from the wood became ________, as if the wood itself had suddenly moved down nearer the track.
somehow she rose over her excitement, though, and concentrated all she could on the task ________.
recently a number of voluntary initiatives have sought to ________ a sense of belonging to the community on the part of young people.
on the physical level, massage aids the elimination of ________ wastes (often the cause of muscle aches and pains) by stimulating blood circulation.
this chapter cannot claim to clear up the confusing ________ of approaches but it will offer some guidance.
there is always a moment in time when we can make a decision whether or not to ________ our anger.
it is assumed that the interior of the cap was ________ soft leather.
residents remember all too well the floods of 2010 that caused ten billion dollars in damage and forced thousands to ________.
on a spring moonlit night, birds are singing, the air is ________ with the fragrance of flowers.
beyond the realm of information technology, the accelerated pace of technological change in virtually every industry has created entirely new businesses, wiped out others, and produced a ________ demand for continuous innovation.
he is now engaged in a probe into the ________ of matters.
without no income to deposit, sue’s checking account _______ into negative balances.
the economic slump that so many people suffered through _______ in the united states.
the two things are the same in outward form but different ________.
it was all the money sue had left after her unemployment benefits had ________.
he slumped down on his bed and ________ a brief and painful fit of crying.
economics has usually been ________ to politics, and politics have generally been dominated by locali and authoritariani (独裁主义).
fat ________ the blood vessels, making your circulation bad and therefore creating many problems.
the shop is expected to generate roughly $4 million in ________ sales, bringing the airport roughly $400,000 to $600,000 a year.
the fact is that chinese parents do things that seem ________ , unimaginable, even illegal, to opinionated westerners.
which of the following factors contribute to success?
what rules should we follow to develop a good example essay?
which of the following are usual techniques to enhance narration?
which of the following are useful tips to write good narrative writings?
which of following are true of biography?
how to develop a travel essay?
which of the following are useful tips to develop a comparison/contrast essay?
where can we usually find the main idea sentence in a paragraph?
which of the following transitions are commonly used in cause-and-effect essays?
which of the following are possible purposes of writing argumentative essays?
世界上第一个农业实验站是下列哪位科学家在哪一年建立的？
洛桑试验站是下列哪位科学家创立的？
我国在哪一年建立了全国肥料试验网
下列科学家中，提出判断高等植物必需营养元素的三条标准是谁？
目前国内外公认的高等植物所必需的营养元素有几种？
下列哪些选项属于李比希提出的学说？
影响植物体中矿质元素含量的因素包括哪些？
下列哪些选项指出了李比希观点认识的不足与局限性？
植物营养生理学研究范畴包括哪些？
肥料三要素是包括哪些元素？
植物必需营养元素有哪些？
判断一种元素是植物必需营养元素的标准是什么？
作物叶面喷施肥料（叶面肥）有哪些优点？
下列元素中，对甜菜生长发育有益的元素是？
报酬递减律是下列哪位科学家共同提出来的？
下列哪种元素能够成为酶和底物之间的桥接元素？
叶片对二氧化碳的吸收主要通过哪个部位进入？
盐碱土上不宜施用以下哪种钾肥？
植物根系吸收养分的主要部位是？
土壤中的养分的迁移是通过哪些方式实现的？
影响叶部营养的条件有哪些？
种肥施用的方法有哪些？
植物将根系吸收的养分转移到根部相邻细胞是通过下列哪种运输方式实现的？
石灰性土壤上施用氯化铵和硫酸铵都会使土壤因脱钙而板结。
一般植物含氮量约占植物干重的百分率是多少？
下列哪种氮肥不易被土壤吸附，但易溶于水且易随水移动？
下列哪种氮肥含氮量最多？
下列哪些选项是土壤中氮的主要来源
氮在土壤中的转化主要有哪些？
氮素损失的途径有哪些？
作物缺氮症状与缺硫症状相似，症状均先表现在顶部新叶。
下列哪个选项是植素的生理作用？
钙镁磷肥属于下列哪种形态的磷肥？
以下哪种元素缺乏不会出现黄叶现象？
以下哪种作物对磷的吸收能力最强
磷能提高作物对外界的抗逆性表现在？
在小麦与棉花的轮作中，磷肥应优先分配在小麦上。
水溶性钾与代换性钾的转化是通过下列哪方式进行的？
钾在植物体内的形态主要是以什么为主？
草木灰中的钾90%左右是什么类型的钾？
下列植物中适合大量施用氯化钾的是?
盐碱土上不宜施用以下哪种钾肥？
影响钾晶格固定的因素有哪些？
土壤中钾的形态主要包括哪些？
氯化钾为生理酸性肥料。
下列那一种是长效镁肥？
下列哪个选项属于植物缺mg症状表现？
钙在植物体内的主要生理功能是？
镁是植物体内哪些化合物的组成成分？
下列哪些元素属于大量元素？
植物体内含硫的氨基酸有？
硫虽不是叶绿素的组成成分，但缺硫时叶片会失绿黄化。
钙在植物体内移动性大，缺钙首先在老叶出现症状。
矫治酸性土壤的作物缺镁，施用氢氧化镁的效果比硫酸镁好（等镁量比较）。
下列哪种植物"喜铝"？
硼砂作叶面肥的适宜浓度是？
铁是哪些化合物的组成成分
钼的营养功能是什么？
植物缺硼症状主要表现为？
耐氯作物有哪些？
豆科作物的固氮酶含有哪些营养元素
钼在植物体内的主要作用是促进氮素代谢。
硝酸钠是生理酸性肥料。
过量施用石灰会降低土壤硼的有效性。
植物营养诊断的一般程序是什么？
酶学诊断的优点有哪些？
植物的缺素病与土壤的类型和特性有明显的关系。
三元低浓度复合肥的浓度范围是？
复合肥料的优点有哪些？
下列哪些选项是今后复合肥的发展方向？
有机肥的种类有哪些？
下列哪些选项是复混肥料施用的原则?
有机肥料有哪些特点?
秸秆还田有何积极作用?
影响堆肥腐熟的主要因素有？
水稻施用腐熟有机肥容易使养分淋失，最好施用未腐熟的有机肥
国土空间规划体系是指
详细规划在城镇开发边界外指
将主体功能区规划、土地利用规划、城乡规划等空间规划融合为统一成
发展规划落地实施的空间保障是
国土空间开发保护制度的手段是
详细规划的依据、相关专项规划的基础是
五级三类四体系的五级指
五级三类四体系的三类指
国土空间总体规划按哪些级编制
全国国土空间规划侧重
省级国土空间规划侧重
市县和乡镇国土空间规划侧重
城镇开发边界外详细规划为
自然资源部放管服改革的举措有
建设项目选址意见书、建设项目用地预审意见合并为
建设用地规划许可证、建设用地批准书合并为
多项测绘业务整合指
编制土地出让方案的依据是
不再办理用地预审的项目指
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