The sludge tank installed in the diesel engine room is used to collect（）
Ⅰ.sludge from the fuel oil settling tanks ad centrifuge
Ⅱ.water that has been collected in the settling tank
A.Ⅰonly
B.Ⅱ only
C.bothⅠand Ⅱ
D.neitherⅠor Ⅱ
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A.ignition lag
B.engine horsepower
C.lube oil system pressure
D.specific fuel consumption
A.governor flyweight action on a pilot valve which controls fuel injection
B.governor flyweight motion acting on fuel controls through suitable linkage
C.positioning a butterfly valve in the fuel delivery system positioning
D.a servomotor piston attached to the fuel controls
A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above
A.low exhaust temperature
B.low exhaust pressure
C.mechanical knock in each cylinder
D.black or gray exhaust smoke
A.swept volume of the cylinder
B.inside diameter of the cylinder
C.piston displacement in the cylinder
D.length of the piston stroke
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