单选题The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）Aspur gearedBscrew gearedCworm gearedDbelt driven
单选题
The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）
A
spur geared
B
screw geared
C
worm geared
D
belt driven
参考解析
解析：
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相关考题：
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