【简答题】What is the chief cause of unhappiness when actual circumstances are not unfavorable?
【单选题】在用比例调节器组成的温度控制系统中,量程为0~100°C,在测试中当温度为80°C时,调节器输出为0.04MPa,在60°C时,调节器输出为0.06MPa。此调节器为()调节器,其比例带PB为()。
【单选题】在用比例调节器组成的温度控制系统中,其量程为0~100°C,在测试中当温度为80°C时,调节器输出为0.04MPa,在60°C时,调节器输出为0.06MPa,此调节器为调节器,其比例带PB为 。
【简答题】Prohibitionists were convinced that was the chief cause of the social problems.
【单选题】According to Peter H. Gleick, what is the chief cause of water shortage?
A.
The diversion of the rivers.
B.
The change of the climate.
C.
The environmental pollution.
D.
The growth of population.
【简答题】The chief and immediate cause of the war was ____.
【单选题】在用比例调节器组成的温度控制系统中,量程为0~100°C,在测试中当温度为80°C时,调节器输出为0.04MPa,在60°C时,调节器输出为0.06MPa。此调节器为( )调节器,其比例带PB为( )。
【单选题】以下除哪项外,均是异位妊娠可能发生的部位