單項(xiàng)選擇題Auxiliary boilers can be classified as()

A.water-tube natural circulation boilers
B.fire-tube boilers
C.water-tube forced circulation boilers
D.all of the above


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1.單項(xiàng)選擇題When the tilting box of a variable stroke axial-piston pump is perpendicular to the pump shaft, which of the following conditions will exist?()

A.The pistons reciprocate
B.The ‘B’ end cylinder barrel rotates
C.There is no fluid flow
D.Power is transmitted hydraulically

3.單項(xiàng)選擇題When the steering wheel is turned, oil is directed to the steering gear rams by()

A.modulating the oil flow with the six-way valve
B.moving the automatic pressure differential valve
C.moving the receiving telemotor which regulates the tow-way valve
D.varying the eccentricity of a floating ting or angle of a tilting box

4.單項(xiàng)選擇題Rudder position is shown on the bridge by the()

A.rudder angle indicator
B.follow-up gear
C.telemotor position
D.relief valves

5.單項(xiàng)選擇題In an elector-hydraulic steering system, rudder shock is limited by()

A.a differential gear
B.return springs
C.a hydraulic accumulator
D.relief valves

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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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By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

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

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

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Using a file without a handle may result in ()

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Diesel engine air start system check valves are opened by ()

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During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

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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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The cetane rating of diesel fuel is an indication of the ()

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