單項(xiàng)選擇題Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?（）

A.discharge side of the centrifugal pump
B.suction side of the centrifugal pump
C.the lowest point of the cooling water system
D.inlet of the main engine


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1.單項(xiàng)選擇題From viewpoint of practice, it is sometimes important to detect abnormal happenings in the running gear by（）

A.a keen sense of hearing
B.rich theory
C.communicating ability with others
D.repetition work

3.單項(xiàng)選擇題During tours of inspection in the machinery space, you found a fire on a running generator, what should you do first?（）

A.inform chief engineer officer immediately
B.stop the generator
C.let the duty officer in bridge determine how to do
D.wait for help

4.單項(xiàng)選擇題What is used for preventing pollution damage to the sea from ships?（）

A.MARPOL 73/78
B.SOLAS 74
C.STCW 78/95
D.ISPS 2002