单项选择题
If the officer on watch is in any doubt as to the pilot’s actions，or intentions，he should （）.
A.notify the Captain as soon as possible B.seek clarification from the pilot C.take action by his own judgment D.cease the duty of pilot's at once
单项选择题 Gangway （）with pilot ladder on my starboard side．
单项选择题 From （）the mariner can understand the data of tide．
单项选择题 From （） the mariner can know the data of tide．
