单项选择题
A vessel’s quarter is that section which is（）.
A.abeam B.dead astern C.just aft of the bow D.on either side of the stern
单项选择题 A V-shaped ripple with the point of the V pointing upstream in a river may indicate a（）.
单项选择题 A wet cargo refers to（）.
单项选择题 A wildcat ia a（）.
