单项选择题
A.prepares B.preparing C.prepared D.prepare
When you keep a gangway watch, you should （）the mooring...
单项选择题When you keep a gangway watch, you should （）the mooring lines according to the rise and fall of the tide.
A.adjusted B.adjusting C.adjusts D.adjust
Lower gangway into place and （）safety net.A.fastB.make ...
单项选择题Lower gangway into place and （）safety net.
A.fast B.make fast C.fasten D.fastened
We should hoist national flag （）.A. on timeB. in timeC....
单项选择题We should hoist national flag （）.
A. on time B. in time C. soon D. at times
