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【单选题】
—What’s ____ your classroom building? —There are some big trees.A.
in front of
B.
in the front of
C.
in front
D.
in the front
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【单选题】We have the pleasure () apprising you of the arrival day of shipment.
A.
in
B.
of
C.
at
D.
for
【简答题】From the samples sent us on Jan.1,we have the pleasure of handing you the following order.
【单选题】We have the pleasure to introduce ourselves to you and hope we may have a cooperation opportunity with you in your business __________We have the pleasure to introduce ourselves to you and hope we ma...
A.
extension
B.
extent
C.
entertainment
D.
extant
【简答题】对于结型场效应管,当— u GS — > — U GS(off) —时,管子一定工作在 C 。 A .恒流区 B .可变电阻区 C .截止区 B .击穿区
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