What is the main purpose of the engi

单选题 What is the main purpose of the engine locking device?

A、 To keep fasteners and other parts safely engaged.

B、 To apply or keep a torque.

C、 To prevent the thief.

D、 To prevent the leakage.

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单选题 The engine nacelle supplies:

A、Fuel to the engine.

B、Cooling air to the engine.

C、A smooth aerodynamic surface over the engine.

D、A protective cover for APU.

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单选题 How many kinds of carbon-contact seals provide sealing of the AGB of CFM56-3?

A、1

B、2

C、3

D、4

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单选题 The CFM56-3 engine supply power to

A、Boeing 737 classic

B、Boeing 757

C、320 family

D、Boeing 737Ng.

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单选题 How much of thrust does the secondary airflow produce approximately when taking off?

A、0

B、20

C、80

D、100

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单选题 Which following statement is not true about the engine safety hazards?

A、The inlet suction can pull people and large objects into engine.

B、Ear protection must be worn when near an engine in operation.

C、Ground personnel must stay clear of the hazard zones and stay in touch with the flight compartment personnel while engines are run.

D、The entry/exit corridor can be used when the engine in high power.

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单选题 The data plate has not the data of

A、Engine model number.

B、Engine serial number

C、Thrust rating.

D、The bump option.

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单选题 What's the purpose of the engine drain system?

A、To collect and release fluid leakage overboard.

B、To take the fluid leakage to the sumps.

C、To supply the oil to the AGB.

D、To supply the fuel to the fuel pump.

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单选题 How many main bearings does the CFM56-3 engine have?

A、2

B、3

C、4

D、5

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