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【多选题】
37 植物组织培养技术的三大难题分别为()。
A.
褐变
B.
污染
C.
玻璃化
D.
培养基配方
E.
母液的配制
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参考答案:
举一反三
【多选题】If the minimum wage is below the equilibrium wage,
A.
the quantity demanded of labor will be greater than the quantity supplied.
B.
the quantity demanded of labor will equal the quantity supplied.
C.
anyone who wants a job at the minimum wage can find one.
D.
the quantity demanded of labor will be less than the quantity supplied.
【单选题】Setting a minimum wage above the equilibrium wage:
A.
results in increased unemployment, and setting a minimum wage below the equilibrium wage has no effect on unemployment.
B.
has no effect on unemployment, and setting a minimum wage below the equilibrium wage results in increased unemployment.
C.
results in increased unemployment, and setting a minimum wage below the equilibrium minimum wage results in decreased unemployment.
【单选题】对维持精神和情绪上的平衡最重要的是
A.
REM 期
B.
NREM 第一期
C.
NREM 第二期
D.
NREM 第三期
E.
NREM 第四期
【单选题】将直流电能转换为交流电能回馈电网的电力电子电路是( )。
A.
有源逆变器
B.
A/D变换器
C.
D/A变换器
D.
无源逆变器
【单选题】If the minimum wage exceeds the equilibrium wage, then
A.
the quantity demanded of labor will exceed the quantity supplied.
B.
the quantity supplied of labor will exceed the quantity demanded.
C.
the minimum wage will not be binding.
D.
there will be no unemployment.
【单选题】So firmly entrenched in the political economy has the minimum wage become that its latest increase to £5.35 ($10.08) an hour, caused little stir. Yet the introduction of a national pay floor in 1999 w...
A.
people do not care about the minimum wage any more.
B.
in the past, there were different minimum wage rates.
C.
new Labor will introduce new economic policies.
D.
a national pay floor is challenged by a few industries.
【简答题】President Clinton has proposed to raise the minimum wage for this underprivileged to ______ per hour.
【判断题】直流稳压电源电路是一种能量转换电路,它将交流能量转换为直流能量。
A.
正确
B.
错误
【单选题】The minimum wage law has which of the following effects?
A.
Workers are willing to offer a larger quantity of labor for sale
B.
Employers are willing to hire a smaller quantity of labor
C.
A surplus of labor at the minimum wage creates higher unemployment
D.
All of these are effects of the minimum wage
【单选题】If the minimum wage is above the equilibrium wage,
A.
the quantity demanded of labor will be greater than the quantity supplied.
B.
the quantity demanded of labor will equal the quantity supplied.
C.
the quantity demanded of labor will be less than the quantity supplied.
D.
anyone who wants a job at the minimum wage can find one.
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