单项选择题
AMVER is a system which provides（）.
A.satellite communications B.navigational information C.weather information D.position reporting service
单项选择题 All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
单项选择题 All portable fire extinguishers must be capable of being（）.
单项选择题 All personnel on board a vessel should be familiar with the rescue boat’s（）.
