The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when ().

A . excessive loads are placed on the winch B . minimum pull is being exerted by the winch C . automatic operation of the winch is desired D . wire is being retrieved at the maximum rate

时间:2022-09-08 12:31:03 所属题库:船舶电气与船舶安全题库

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