The amount of fuel injected in a particular time, or degree, of crankshaft rotation is termed （）.

[单选题]When fuel is injected late into a diesel engine cylinder_______.A．the exhaust will be clearB．fuel consumption will be lowC．all the fuel will be burned at top dead centerD．fuel consumption will be high

[单选题]F．uel droplets injected into a diesel engine cylinder must have adequate penetration to ____.A．prolong the ignition delay periodB．ensure the beginning of fuel injectionC．thoroughly utilize the air chargeD．allow controlled fuel combustion

[单选题]Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.A . spark plugsB . glow plugsC . heat of compressionD . a magneto

[单选题]The quantity of oil injected into the cylinder can be regulated （）.A . by turning the pump plungerB . by vary the fuel valve spring forceC . by no means by controlling the governorD . by enlarging or diminishing the injection hole

[单选题]During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.A . ensure penetration and distribution of the fuel in the combustion chamberB . ensure the needle valve is flushed clean during each injectionC . prevent combust

[单选题]Fuel injection systems meter fuel, atomize fuel, and （）.A . create turbulence in the combustion chamberB . aid in completing cylinder scavengingC . inject fuel at the proper timeD . minimize fuel penetration into the cylinder

[单选题]Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.A . cold corrosion of the nozzlesB . fuel viscosity for better atomizationC . carbon accumulation on the nozzlesD . fuel detonation in the cylinder

[单选题]is the budgeted amount for the work actually completed on the schedule activity or WBS component during a given time period．A．Planned valueB．Earned valueC．Actual costD．Cost variance

[试题]Inthelateseventies,theamountoffixedassetsrequiredtoproduceonevehicleinJapanwas______equivalenttothatintheUnitedStatesA．)rudelyB)roughlyC)readilyD)coarsely

[单选题]The amount of fluid delivered by a positive displacement pump can be regulated by _____.A．throttling the pressure lineB．changing the speed of the driving rotorC．either A or BD．None of the above is tree