單項(xiàng)選擇題The rate of wear on a cylinder liner depends on the ()

A.quality of air filtration
B.effectiveness of lubrication
C.type of fuel used
D.all of the above


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1.單項(xiàng)選擇題In diesel engineering practice, the term used to express the ignition quality of a particular fuel is()

A.cetane number
B.octane number
C.ignition index number
D.volatility point

2.單項(xiàng)選擇題The cetane number rates fuels for diesel engines according to its ()

A.antiknock characteristics
B.ignition qualities
C.rates of vaporization
D.viscosity

3.單項(xiàng)選擇題Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an()

A.increase in starting air pressure
B.increase in lube oil viscosity
C.compression expansion device
D.jacket water heater

4.單項(xiàng)選擇題The burning of fuel oil in a diesel engine having a high sodium content, will cause ()

A.corrosion and grooving of exhaust valves
B.corrosion and gumming of the fuel injection pump
C.salt deposits in the exhaust manifold
D.slag deposits in the fuel injection equipment

5.單項(xiàng)選擇題The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in ()

A.clogged fuel injection pumps
B.increased cylinder liner wear
C.intake valve stem corrosion
D.varnish deposit on pistons

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Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

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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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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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As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

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()connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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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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Flame failure in an automatically fired auxiliary boiler can from a/an ()

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For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

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The main purpose of port State control is not to()

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The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

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