单项选择题
The function of the cut-off lever is（）
A.to provide electrical signal B.to provide feed-back C.to provide local manual control D.to provide right rudder angle
单项选择题 The advantage of the control equipment is（）
单项选择题 The spur geared mooring winches have advantages over worm geared ones in（）
单项选择题 In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.
