单项选择题
If a hurricane several hundred miles away is moving in your general direction your barometer would（）.
A.start to rise rapidly B.start to fall gradually C.rise slowly,begin pumping and then start a slow,steady fall D.remain steady
单项选择题 （）locates in the aftmost part of a ship.
单项选择题 What is TRUE when operating in fog and other vessels are detected by radar?（）
单项选择题 What occurs when rising air cools the dew point?（）
