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【单选题】
在套管换热器中用常压水蒸气冷凝加热空气,空气平均温度为40 o C,则壁温大约为( )。A.
40 o C
B.
100 o C
C.
70 o C
D.
50 o C
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【单选题】What was another contribution by Edison to the movies?
A.
He introduced the 35 mm standard machine to the world.
B.
He introduced the 35 mm as the international standard film width.
C.
He created a 35 mm standard device for showing movies.
D.
He created his own standard devices for showing 35 mm film.
【简答题】A.He might go to the movies when he finishes studying. B.He doesnt know if he can concentrate on a movie. C.He needs to stop studying for a while. D.He cant think about anything but studying.
【简答题】审计证据的适当性包括相关性和（ ）。
【简答题】A．He is going to Professor Hudson's home. B．He is going to the movies with the woman. C．He is going to the cinema with Jane. D．He is going to the dorm to write his thesis.
【简答题】定义接口的关键词是
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