单选题What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）ASea anchorBSteering oarCSpare rudderDDaggerboard
单选题
What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）
A
Sea anchor
B
Steering oar
C
Spare rudder
D
Daggerboard
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