单项选择题
A.At B.By C.For D.Upon
()there danger of explosion?A.IsB.HasC.IfD.Do
单项选择题()there danger of explosion?
A.Is B.Has C.If D.Do
()the whole the stowage is all right.A.InB.OnC.FromD.To
单项选择题()the whole the stowage is all right.
A.In B.On C.From D.To
()the time of collision,the 3rd officer was on the brid...
单项选择题()the time of collision,the 3rd officer was on the bridge.
A.At B.On C.Of D.In