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【单选题】
当换热器中冷热流体的进出口温度一定时,( )的说法是错误的A.
逆流时，△t m 一定大于并流、错流或折流时的△t m
B.
采用逆流操作时可以节约热流体(或冷流体)的用量
C.
采用逆流操作可以减少所需的传热面积
D.
温度差校正系数妒位的大小反映了流体流向接近逆流的程度
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【简答题】Dear Sirs, The Colston Engineering Co. Ltd. has asked for ta standing credit of $ 1000, but as our _____________ of the company is limited to a few months' trading _____________ an L/C basis, we shoul...
【单选题】She's seen her son face __________ before, like dealing with the death of his father, Pat, in a bike accident.
A.
suffering
B.
difficulty
C.
happiness
D.
adversity
【单选题】When does auxiliary burner of rotary nozzle incinerator begin to work? Iwhen igniting II the sludge for dealing with is too much III before stopping incinerator
A.
Ⅰ+Ⅱ
B.
Ⅰ+Ⅲ
C.
Ⅱ+Ⅲ
D.
Ⅰ+Ⅱ+Ⅲ
【简答题】Before dealing with this company, ______________________ (你应该起草一份契约). (draw up, deed)
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