A.In B.On C.To D.For
单项选择题()using the derrick at once,the gooseneck is bent.
A.Continue B.Start C.Commence D.Stop
单项选择题()this the Chief Officer agreed not to put any remarks.
A.At B.By C.For D.Upon
单项选择题()there danger of explosion?
A.Is B.Has C.If D.Do
单项选择题()the whole the stowage is all right.
A.In B.On C.From D.To
单项选择题()the time of collision,the 3rd officer was on the bridge.
A.At B.On C.Of D.In