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.
1、A non-return valve in the air delivery
A non-return valve in the air delivery line near to the compressor must be （）type similar to the compressor discharge valve.Athe low inertiaBthe high inertiaCthe low velocityDthe high velocity
2、An indication of a diesel engine air i
An indication of a diesel engine air intake being partially clogged, is （）.Alow firing pressure and low exhaust temperaturesBlow firing pressur...
3、An engineer, together with some motorm
An engineer, together with some motormen （）to help in the repair work.AsendBsendsCwas sentDwere sent
4、An increase in the air inlet manifold
An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.Adecrease in maximum cylinder pressureBincrease in ignition lagCdecrease in fuel consumption per horsepower-hourDdecrease in exhaust manifold pressure
5、The intake valves in a diesel engine a
The intake valves in a diesel engine are reseated by （）.Acam followersBpush rodsCcombustion gasesDvalve spring
6、In an engine with a pot-shaped piston,
In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the （）.AcrossheadBcrankpinCcrank journalDgudgeon pi