A.the same, whether at sea, or during maneuvering
B.adjusted during each hour of operation while at constant RPM
C.higher at sea than while maneuvering
D.lower at sea than while maneuvering
第1题
A.has learnt
B.have learnt
C.learn
D.are learning
第2题
A.the scavenging air
B.the exhaust gases
C.the mixed air
D.the spray oil
第3题
A.the slewing motor
B.the luffing motor
C.the hoisting motor
D.none of the above
第4题
A.promote refrigerant dehydration
B.be absorbed in the receiver
C.cause low condensing pressure
D.carry moisture and lead to corrosion
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