The desirable properties of a marine fuel oil should include .
A.high flash point and high viscosity
B.low flash point and high viscosity
C.low heating value and high sulphur content
D.high heating value and low sulphur content
第1题
A.No fuel will be delivered
B.The maximum effective stroke will be attained
C.The fuel delivered to the cylinder will be excessive
D.The injection nozzle will overheat and carbonize
第2题
A.crosshead
B.crankpin
C.crank journal
D.gudgeon pin
第3题
A.reciprocating
B.rotating
C.running
D.removing
第4题
A.Decrease the air density
B.Increase the exhaust temperature
C.Decrease the lube oil temperature
D.Increase the air density
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