单选题In launching a covered lifeboat，what would safely lower the lifeboat from inside the lifeboat cabin?（）AFrapping lineBTricing lineCRottmer releaseDWinch remote control wire
单选题
In launching a covered lifeboat，what would safely lower the lifeboat from inside the lifeboat cabin?（）
A
Frapping line
B
Tricing line
C
Rottmer release
D
Winch remote control wire
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