A.030 to 1
B.300 to 1
C.333 to 1
D.330 to 1
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A.air in the cooling system
B.an overhauled water pump
C.correct amount of coolant
D.no air in the cooling system
A.camshaft
B.reduction gears
C.rocker arm
D.connecting or piston rod
A.a worn water pump
B.not enough coolant
C.air in the cooling system
D.all of the above
A.flywheel
B.crankshaft
C.journal bearings
D.camshaft
A.45
B.60
C.90
D.100
最新試題
In using reduction gears to obtain efficient propeller speeds, （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
The main purpose of the piston oil scraper rings is to （）.
A thrust bearing is used with a propulsion diesel engine to （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
To determine if the lube oil filter elements need changing, （）.