单项选择题
Continuous sounding of a fog whistle by a vessel is a signal（）.
A.that the vessel is anchored B.to request the draw span of a bridge to be opened C.of distress D.that the vessel is broken down and drifting
单项选择题 The Greek ship drifted and struck the portside of a Chinese ship，which（）the bulwalk and Stanchions.
单项选择题 The extent of the damage could not be（）though I inspected it with the Chief Stevedore in charge.
单项选择题 The damage was caused（）the stevedores.
