When the air charge contacts with the cylinders and pistons and mixes with the residual gases, it will()
- Aincrease in temperature
- Blose its energy partly
- Cexpand and do work
- Dbegin to be compressed
When the air charge contacts with the cylinders and pistons and mixes with the residual gases, it will()
1、When the starting air valve closes on
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.AjustBnearlyCmerelyDalready
Fog forms when the air().AIs 50% water saturatedBIs 90% water saturatedCTemperature is greater than the dew point temperatureDTemperature is equal to,or below the dew point temperature
3、The dew point of air is reached when t
The dew point of air is reached when the wet bulb temperature is ().ATwice the dry bulb temperatureB10℃ above the dry bulb temperatureC5℃ above the dry bulb temperatureDEqual to the dry bulb temperature
Fog forms when the air().Ais 50% water saturatedBis 90% water saturatedCtemperature is greater than the dew point temperatureDtemperature is equal to,or below the dew point temperature
5、When the dew point of the outside air
When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold,you should().Asecure all ventilationBshut down the exhaust blowersCshut down the intake blowersDventilate the cargo hold
6、In a () engine the charge of air in th
In a () engine the charge of air in the cylinder before compression commences is above atmospheric pressure.Apressure chargedBnaturally aspiratedCcontaminatedDhigh speed diesel