单项选择题
A. at the same time B. on time C. in time D. at times
We must （）to inspect the problems about the safety of f...
单项选择题We must （）to inspect the problems about the safety of fire prevention.
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
