Question 3What does IPCC stand for?
A. International Practitioners on Climate Change
B. Intergovernmental Panel on Climate Change
C. International Panel for Climate Counsel
D. Intergovernmental Practitioners for Climate Change
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Question 2Which of the following is true of Carnot efficiency?
A. Carnot efficiency is the same as thermal efficiency
B. Carnot efficiency is calculated using carnots
Carnot efficiency is the maximum possible efficiency for a thermal heat engineincorrect
Question 1Energy and power are?
A. Related by the following equation Power = energy/time
B. The same thing
C. Related to electricity only
硅材料的禁带宽度为( )eV。
A. 0.7
B. 1.4
C. 2.6
D. 1.12
本征半导体中,电子和空穴不一定是成本出现的。( )
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