oie published standard protocols in the oie aquatic manual (oie, 2014) for detection and identification of pathogens on the oie list of notifiable aquatic animal diseases in 2015 included six crustacean viral diseases including bellows except the .
a competitive firm has a continuous marginal cost curve. it finds that as output increases, its marginal cost curve first rises, then falls, then rises again. if it wants to maximize profits, the firm should never produce at a positive output where price equals marginal cost and marginal cost decreases as output increases.
cnc闭环系统的反馈信号可以从下列部位取得
沿刀具前进方向观察刀具中心轨迹偏在工件轮廓右边时,用右刀补。
if the equlibrium price of gasoline is $1.00 per gallon and the government places a price ceiling on gasoline of $1.50 per gallon, the result will be a shortage of gasoline
an externality is a cost or a benefit imposed upon someone by actions taken by others.
a production isoquant is a locus of combinations of inputs that are equally profitable.
if a monopolist faces a competitive labor market, it will hire labor up to the point where the price of output times the marginal product of labor equals the wage rate
if a monopsonist pays the wage rate w; then the amount of labor that he can hire is l(w) = aw, where a is a positive constant. the marginal cost of labor to the monopsonist is:
in which period of the bacteria’s growth cycle is most sensitive to the antibiotics?
领导的根本任务是引导成员去实现组织目标，但组织目标的实现与一定的组织和人员紧密联系。()
确定学校管理目标的依据有()。
含碳量高于0.8%的钢，一般不能采用正火工艺。()
泰罗科学原理学说的基本点有()。
微观内应力是由于塑性变形时，工件各部分之间的变形不均性所产生的。()
the disease caused by alpha hemolytic streptococcus is ( )