The pump has a constant stroke and the amount of fuel delivered is regulated by rotating （） which has a specially arranged helical groove cut into it.

[单选题]The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the （）.A . control rackB . delivery valveC . governor speedD . plunger crossbar

[单选题]His constant_____with his peers has left its mark on his growth.A.consentB.

[单选题]A firm has a constant growth rate of 7% and just paid a dividend of $6.25.

[单选题]Fuel pump index is （）.A . the viscosity indexB . the fuel oil contentsC . the starting speedD . the reading at the rack

[单选题]C．ompared to a constant pitch propeller, a controllable pitch propellerA．more efficiently uses available engine powerB．operates at a lower efficiency at a fixed speedC．produces the same torque at lower engine powerD．develops its rated power at a lowe

[单选题]A． floating constant consists of an integer part，a decimal point，a fraction part，an e or E，and an optionally signed integer _______．A．exponentB．orderC．superfluousD．SuperiorA．B．C．D．

[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 fuel injector pump is operated by （） which drives the plunger up and down.A . a separate motorB . a camC . a generatorD . a chai

[单选题]Engine fuel pump index is （）.A . the viscosity indexB . the fuel oil contentsC . the starting speedD . the reading at the rack

[单选题]If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.A . high steam pressure in the boilerB . abnormally high feed water temperatureC . abnormally high boiler water temperatureD . steam demand exc