题目内容

Technological change shifts the marginal abatement cost function _________.

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A policy is cost-effective if:

A. it achieves a given amount of environmental improvement at the least possible cost.
B. it achieves a given amount of environmental improvement at the highest possible cost.
C. it achieves a low amount of environmental improvement at the least possible cost
D. none of the answers are corect.

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Incentives for technological innovations cause:

A. shifts the marginal abatement cost function downward
B. new inventions become public goods
C. encourage new technology
D. All answers are correct.

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下列各物理量中，为状态函数的是.........

A. △U
B. U
C. Q
D. W

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已知298K时△fHmΘ(Fe3O4，s)=-1118.0kJ·mol-1，△fHmΘ(H2O，g)=-241.8kJ·mol-1，则反应Fe3O4(s)+4H2(g)→3Fe(s)+4H2O(g)的△rHmΘ=..........

A. -150.8 kJ·mol-1
B. 150.8 kJ·mol-1；
C. 876.2 kJ·mol-1
D. - 876.2 kJ·mol-1

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