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【判断题】
当在稳态状态下,变温传热是指传热面上各点温度既不随实践变化,也不随传热面位置而变化的传热过程。A.
正确
B.
错误
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举一反三
【单选题】Willson：I like Best Buy the best． Masahiro：Why?Willson：Coz they usually__________．They have sales on their TVs and CD-playerseverY once in a while．
A.
have the best deals
B.
sell verY well
C.
make good bargains
D.
cut down prices
【简答题】在汽车玻璃表面涂敷一层 ,例如氧化铈、氧化锌、氧化钛等。
【单选题】Soldiers usually have to bear hardship during the war.
A.
queer
B.
royal
C.
gay
D.
bitter
【简答题】Soldiers returning home from World War II were usually eager to go on with their lives. For most, that meant starting a family. Between 1946 and 1960, 63 million babies were born in the United States,...
【单选题】According to the spokesman of Delta, preferred economy-class tickets_________
A.
usually have a fixed price
B.
Can be obtained with additional charge
C.
are available 24 hours prior to the planes departure
D.
are only for Medallion members
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