One of the signals，other than a distress signal，that can be used by a vessel to attract attention is a(n)（）.

Generally，you can best keep a vessel under steering control when the vessel has（）.

A.headway
B.sternway
C.no way on，with engines stopped
D.no way on，with engines full ahead

点击查看答案&解析

Generally speaking，the most favorable bottom for anchoring is（）.

A.very soft mud
B.rocky
C.a mixture of mud and clay
D.loose sand

点击查看答案&解析