单项选择题
A.pulling a cord
B.cutting the wire restraining bands
C.removing the rudder packing strip
D.throwing the entire container overboard
单项选择题 An inflation life raft is thrown into the water from a sinking vessel, what occurs automatically after the painter trips the C02 bottles to inflate the raft?（）.
单项选择题 An inflation life raft should be lifed back aboard the ship by using（）.
单项选择题 An inflatable liferaft should be manually released from its cradle by（）.