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【单选题】

在293K时,1mol理气等温膨胀至体积增加一倍,则所做的最大功为()

A.
733J
B.
1690J
C.
-733J
D.
-1690J
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参考答案:
参考解析:
.
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举一反三

【单选题】如何处理气制动阀进气门被脏物卡住或损坏()

A.
检查或更换密封圈
B.
连续制动几次吹掉赃物更换阀门
C.
A、B都对

【单选题】How should one invest a sum of money in these days of inflation (通货膨胀) Left in a bank it will hardly keep its value, however high the interest rate is. Only a brave man, or a very rich one, dares to b...

A.
suggest human beings are controlled by a clock
B.
describe why clocks can rule the planet Earth
C.
tell readers what clocks look like
D.
compare clicks to human beings