The mechanical exhaust valve operation system is replaced by（）in an electronic controlled ME engine.
1、Bad valves operation of the reciprocat
Bad valves operation of the reciprocating air compressors can be detected by observation of （）.Athe discharge temperature lowBthe discharge temperature highCthe discharge pressure riseDthe inter-stage pressure low
2、Exhaust valve grooving and corrosion i
Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and （）.AvanadiumBcarbonCcopperDash
3、The exhaust valve opens before bottom
The exhaust valve opens before bottom dead center in a four stroke engine to（）Ⅰ.allow for blow downⅡ.Reduce pumping lossesAⅠ onlyBⅡ onlyCboth Ⅰ and ⅡDneither Ⅰ nor Ⅱ
4、Operation of the valve control release
Operation of the valve control release on a fixed CO2 system must immediately（）.Arelease CO2 to the protected spaceBsecure all mechanical venti...
5、The exhaust valve is opened at about t
The exhaust valve is opened at about the same time （） the air inlet ports are opened.AbeforeBafterCwhenDuntil
6、The opening of an exhaust valve on a m
The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by （）.Adirect action of cam shaftBcompressed air pressureChydraulic push rodsDdirect action of the main piston moving dow