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【单选题】
货物运输途中不需要加温或制冷的机械冷藏车,按机械冷藏车运价率( )。A.
减10%
B.
减15%
C.
减20%
D.
减30%
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举一反三
【简答题】MCS-51外扩I/O口与外RAM是（）。
【单选题】I wondered whether the film was______worth______.
A.
very, to see
B.
well, seeing
C.
very , seeing
D.
well, to be seen
【单选题】The gear, screw, and vane pumps are all classified as _____.
A.
variable stroke pumps
B.
multistage pumps
C.
positive displacement pumps
D.
triple-ported pumps
【单选题】I like this film () the actors are very good and the plot is interesting.
A.
because
B.
although
C.
but
【简答题】 a film takes a long time and is very hard work. Writing the story for the film may take many weeks. Filming the story is also called shooting the film.It often takes at least six months. Actors...
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