Never（）the lifeboat or lifecraft disengaging hocks or hydrostatic release gears because it can cause them to fail to function.<br>A:oil<br>B:rig<br>C:release<br>D:paint

Never（）the lifeboat or lifecraft disengaging hocks or hydrostatic release gears because it can cause them to fail to function.
A:oil
B:rig
C:release
D:paint

出自：海船船员证

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