Engine displacement is equal to the cylinder （）.

[单选题]Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.A . low compression pressureB . increased piston wearC . increased cylinder lube oil consumptionD . poor contact between compression rings and l

[单选题]Fuel is admitted to a diesel engine cylinder through the （）.A . intake valvesB . carburetorC . exhaust portsD . injector nozzle

[单选题]As the displacement of a vessel increases，the detrimental effect of free surface（）.A . increasesB . decreasesC . remains the sameD . may increase or decrease depending on the fineness of the vessel's form

[单选题]The ideal of equal rights and equal responsibilities is______.A． related to either a healthy democracy or a healthy familyB． related to a healthy family as well as healthy democracyC． related to neither a healthy democracy nor a healthy familyD． none

[单选题]Positive displacement, helical gear pumps are well suited for pumping oil becauseA．stuffing boxes eliminate the leakage problems usually associated with other gear pumpsB．it is not necessary to closely maintain design clearances with this pumpC．they

[单选题]If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in _____.A．the crankcase explosionB．lifting of the cylinder safety valve

[单选题]There is an injection pump for each cylinder, which is usually operated once every cycle by （） on the camshaft.A . a gearB . a camC . a rodD . a miler

[单选题]The sequence of fuel injection into cylinders is determined by （）.A . the steeringB . the driven gearC . the turning gearD . the timing gear

[单选题]If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in （）.A . the crankcase explosionB . lifting of the cylinder safety valv

[单选题]Passage FourE．qual pay for equal work is a phrase used by the American women who feel that they are looked down upon by the society. They say it is not right for women to be paid less than men for the same work.People who hold the opposite opinion(ma