【单选题】As the temperature for a given mass of air increase, the().
C.
relative humidity increases
D.
relative humidity decreases
【单选题】单元工程指分部工程中由几个工种施工完成的( )。
【单选题】For a given level of technology, we should expect an increase in productivity within a nation when there is an increase in each of the following except
B.
physical capital/worker.
D.
natural resources/worker
【单选题】煤气中毒主要是因为煤气中的CO起了什么作用
B.
抑制了胆碱酯酶活性,使乙酰胆碱堆积,引起神经中毒的症状。
C.
和血红蛋白结合后,血红蛋白失去了运输氧的功能,使患者因缺氧而死
D.
抑制了体内所有酶的活性,使代谢反应不能正常进行
【单选题】A given increase in demand will raise the equilibrium quantity exchanged:
A.
unless supply is perfectly inelastic.
B.
more in the long run than in the short run.
C.
in the market for normal goods.
【判断题】从营养的角度而言,大米加工精度越高越好。