A.cable stopper
B.winch barrel
C.slewing rim
D.warping drum
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A.chain lifter
B.winch barrel
C.slewing rim
D.warping dru
A.steering gear
B.windlass
C.deck crane
D.warping drum
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Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
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The condensers located in various stages of a flash evaporator are cooled by（）