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【简答题】
在一个传热过程中,当壁面两侧换热热阻相差较多时,增大换热热阻 _______ 一侧的换热系数对于提高传热系数最有效。
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举一反三
【简答题】There are 365 days in a year. We sleep 8 hours a day, so we have 122 days for sleeping. Then our work time has 243 days left. But there are 52 weekends in a year. Each weekend is two days. We lose ano...
【单选题】I can never forget the days _____ we worked together and the days ______ we spent happily together.
A.
when; which
B.
which; when
C.
for which; that
D.
on which; when
【简答题】阅读理解 There are 365 days in a year. We sleep 8 hours a day, so we have 122 days for sleeping. Then our work time has 243 days left. But there are 52 weekends in a year. Each weekend is two days. We los...
【单选题】I can never forget the days _____ we worked together and the days ______ we spent happily together.
A.
for which; that
B.
which; when
C.
when; which
D.
on which; when
【单选题】I can never forget the days________we worked together and the days________we spent together. [ ]
A.
on which；when
B.
which；when
C.
what；that
D.
when；which
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