Why a gearbox is needed in a ship driv...

单项选择题Why a gearbox is needed in a ship driven by a medium-speed diesel engine?（）

A.To reduce the main engine speed
B.To increase the main engine speed
C.To govern the main engine speed
D.To fix the propeller shaft

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1.单项选择题Which one is not true?（）

A.Two main areas of skill are involved in the construction of ship
B.There are distinct divisions in responsibilities between naval architects and marine engineers
C.Each ship will assume varying proportions according to its type
D.Ships can be divided into different categories from different perspectives

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2.单项选择题The displacement of a ship is to the total weight, all told, of the relevant loaded ship（）

A.larger
B.equal
C.smaller
D.equivalent

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3.单项选择题When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship（）

A.equal
B.larger
C.smaller
D.equivalent

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4.单项选择题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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5.单项选择题 The ship emergency plan item should not include （）
Ⅰ.ifesaving,fire fighting, leakage blocking, abandon ship
Ⅱ.irst aid
Ⅲ.ntegration emergency

A.Ⅱ
B.Ⅲ
C.Ⅰ+Ⅲ
D.Ⅰ

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6.单项选择题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

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7.单项选择题In the emergency alarm signals, if the alarm or whistle two long sounds followed by one short sound for 1 minute, it is the （） emergency.

A.fire fighting
B.leakage blocking
C.abandon ship
D.integration

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8.单项选择题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

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9.单项选择题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

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10.单项选择题The SOLAS convention prescribes that the emergency steering drill should be carried out one time every （） months.

A.4
B.3
C.2
D.1

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