单项选择题
A.Selected Worldwide Marine Weather Broadcasts B.your local newspaper C.the Notice to Mariners D.the daily weather map
Compared to internal structural plating，the exterior hu...
单项选择题Compared to internal structural plating，the exterior hull plating on a ship is usually（）.
A.stronger B.thinner C.more corrosion resistant D.a lower grade steel
Compared to a low pressure system，generally the air in ...
单项选择题Compared to a low pressure system，generally the air in a high is（）.
A.warmer，less dense，and less stable B.cool，more dense，and drier C.muggy and cloudy D.extremely moist with high relative humidity
Commercial ships or other persons or agencies requiring...
单项选择题Commercial ships or other persons or agencies requiring the assistance of Canadian Coast Guard icebreakers should first contact（）.
A.the Canadian Coast Guard B.Ice Sarnia C.the Ice Navigation Center D.the icebreaker assigned to the area
