单项选择题
A.overheating of the lube oil
B.over-speeding of the motor
C.wear on the braking system
D.damage to the teeth
单项选择题 You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what actionshould be carried out?（）
单项选择题 You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out?（）
单项选择题 Wear occurring at the tips of the reduction gear teeth is usually the result of （）.