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举一反三
【单选题】干船坞坞室底板的结构型式主要取决于： 。
A.
克服底板自重力的作用方式
B.
克服船坞水平力的作用方式
C.
克服底板上部荷载的作用方式
D.
克服地下水浮托力的作用方式
【单选题】Passage 3 To swim across the English Channel takes at least nine hours. It’s a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes (as long as y...
A.
neither take a train nor go by car
B.
only take a train
C.
either take a train or go by car
D.
only take a bus
【单选题】To swim across the English Channel takes at least nine hours. It"s a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes, but it"s an expensive way to travel....
A.
either by train or by bus
B.
neither by train nor by car
C.
only by train
D.
both by train and by bus