單項(xiàng)選擇題Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）

A.the lubricating oil consumption
B.the turbine blade temperature
C.the flow rate of fuel
D.scavenge air pressure


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2.單項(xiàng)選擇題The alarm signal for engine room catching fire is a blast of random bell follow by （）

A.two knock
B.three knocks
C.four knocks
D.five knocks

4.單項(xiàng)選擇題In the voyage, when carrying out abandon ship drill （） should be test every time.

A.the emergency lighting system for muster and abandon ship
B.air oil emergency shut-down
C.ME emergency operation
D.main auxiliary steering gear changing

5.單項(xiàng)選擇題According to the ship emergency plan, when average accident happened and the captain made the decision to withdraw from the engine room before leaving the engine room, the wrong operation is that （）

A.the chief engineer leaves the engineer room with the engine room log book at first
B.releasing compressed air in the air receiver and closing the watertight door
C.stopping all the running machineries and electric devices
D.closing the quick-closing valves of all the oil tanks, stopping the boiler and releasing gas