单项选择题
A.wear on the towline is equalized B.weight of the towline increases the towing force C.dip in the towline absorbs shock loads D.danger of overriding is reduced
In the International Code of Signals，the code signal me...
单项选择题In the International Code of Signals，the code signal meaning I require immediate assistance is（）.
A.AE B.CB C.DX D.CP
In order to pay out or slack a mooring line which is un...
单项选择题In order to pay out or slack a mooring line which is under strain，you should（）.
A.sluice the line B.surge the line C.stopper the line D.slip the line
In order to maintain a safe speed at all times，any nece...
单项选择题In order to maintain a safe speed at all times，any necessary alterations of speed must（）.
A.be instantly put on B.be instant put into use C.be instantly put into effect D.be put immediately
