In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.

[单选题]An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.A . decrease in maximum cylinder pressureB . increase in ignition lagC . decrease in fuel consumption per horsepower-hourD . decrease in exhaust manifold pressur

[单选题]The period when both inlet valves and exhaust valves are open is referred to as （）.A . valve loopB . valve uniflowC . valve overlapD . valve grinding

[单选题]When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.A . justB . nearlyC . merelyD . already

[单选题]The diesel engine valve subjected to most severe conditions of service is the （）.A . cylinder exhaust valveB . air starting valveC . air inlet valveD . cylinder relief valve

[单选题]In a （） engine the charge of air in the cylinder before compression commences is above atmospheric pressure.A . pressure chargedB . naturally aspiratedC . contaminatedD . high speed diesel

[单选题]If the engine does not start on air, it may be due toA．low compression of the fuel pumpsB．incorrect timing of fuel pumpsC．the starting air valves stuckD．air-locks in fuel oil pipeline

[单选题]If the engine does not start on air, it may be due to （）A . low compression of the fuel pumpsB . incorrect timing of fuel pumpsC . the starting air valves stuckD . air-locks in fuel oil pipeline

[单选题]If the engine does start on air, but combustion does not immediately begin, the cause may be _____.A．failure of the fuel pumpsB．starting air pressure too lowC．stop valve in air line closedD．the turning gear still engaged

[单选题]B．efore starting the engine, the air bottle should be ____.A．pumped upB．loadedC．dischargedD．closed

[单选题]An indication of a diesel engine air intake being partially clogged, is （）.A . low firing pressure and low exhaust temperaturesB . low firing pressure and normal exhaust temperaturesC . high firing pressure and low exhaust temperaturesD . high firing