A.a higher cetane number of fuel oil
B.the diesel fuel used having a high viscosity
C.mechanical rigidity in the lube pump mechanism
D.a decrease rigidity in the fuel pump delivery pressure
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A.Higher compression ratios create higher temperature
B.Higher temperatures create higher compression ratios
C.low temperatures create higher compression ratios
D.Higher compression ratios create low temperatures
A.torque wrench
B.monkey wrench
C.pipe wrench
D.slugging wrench
A.Electric
B.Hydraulic
C.Air
D.All of the above
A.build up the piston crown by metal spraying
B.build up the cylinder head by metal spraying
C.insert shims between the crankpin bearing box and the connecting rod foot
D.install a thinner head gasket
A.cetane number of 55
B.cetane number of 45
C.octane number of 55
D.octane number of 45
最新試題
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
If separating effect is not good, which measure should be taken （）
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.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
To proceed to the assistance of a ship in distress is（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.