单选题When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.Aactivating the release lock of the hookBpulling smartly on the knobbed cocking lanyardCthe effects of buoyancy removing the weight of the raft from the hookDreleasing the boarding flap and the bowsing lines
单选题
When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.
A
activating the release lock of the hook
B
pulling smartly on the knobbed cocking lanyard
C
the effects of buoyancy removing the weight of the raft from the hook
D
releasing the boarding flap and the bowsing lines
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