单项选择题
All inflatable life rafts have（）.
A.safty straps from the overhead B.built in seats C.releasing hooks at each end D.water stabilizing pockets
单项选择题 All of the following are part of the fire triangle except（）.
单项选择题 All of the following records are usually maintained by the watch-standing officers aboard a vessel except the（）.
单项选择题 All portable fine extinguishers must be capable of being（）.
