單項(xiàng)選擇題The starting current of an a-cmotor is () the rated current.

A.the same as
B.much larger than
C.less than
D.equals


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1.單項(xiàng)選擇題The cetane rating of diesel fuel is an indication of the ()

A.ignition quality of the fuel
B.calorific value of the fuel
C.flash point of the fuel
D.rate of fuel consumption

2.單項(xiàng)選擇題Which of the following items don’t belong to dock repair works?()

A.making the repair list, booking spare parts and special tools for the dock repair
B.shutting off all of the S.W valves to outboard
C.the sketches or diagrams used for the dock repair
D.cleaning up the oil tank and boiler before enter the dock

3.單項(xiàng)選擇題The main purpose of port State control is not to()

A.prevent an unsafe ship proceeding to sea
B.prevent a ship threatening the marine environment
C.fine the ships
D.confirm a safe sailing

4.單項(xiàng)選擇題To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

A.Speed limiting governor
B.Over-speed governor
C.Over-speed trip
D.Over-speed relay

5.單項(xiàng)選擇題If two A.C.generators are to be operated in parallel, the load is distributed evenly by()

A.means of rheostat the governor settings
B.a balance coil excitation
C.adjusting the governor settings
D.changing excitation

6.單項(xiàng)選擇題Diesel engine air start system check valves are opened by ()

A.an air start cam
B.cylinder compression pressure
C.starting air pressure
D.valve springs

7.單項(xiàng)選擇題Flame failure in an automatically fired auxiliary boiler can from a/an ()

A.incorrect electrode setting
B.incorrect nozzle position
C.clogged fuel nozzle
D.broken high tension lead

8.單項(xiàng)選擇題Under MARPOL Code the ship to which it applies has to carry ()

A.an International Ship Security Certificate
B.an International Oil Pollution Certificate
C.a Safety Management Certificate
D.an International Ballast Water Management Certificate

9.單項(xiàng)選擇題The treatment of the fuel oils involves storage, heating, filtering and()

A.centrifuging
B.pressurizing
C.atomization
D.igniting

10.單項(xiàng)選擇題Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()

A.Sub-cooled liquid
B.Sub-cooled vapor
C.Superheated vapor
D.Liquid

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Under MARPOL Code the ship to which it applies has to carry ()

題型:?jiǎn)雾?xiàng)選擇題

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?()

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Engine parameters shall be corresponded to NOx Technical Files. This is required by ()

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()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

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The treatment of the fuel oils involves storage, heating, filtering and()

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The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

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When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

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Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

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To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

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Using a file without a handle may result in ()

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