If exhaust temperatures are too high,

1、If the head pressure is too high,（）

If the head pressure is too high,（）Athe relief valve should open before the high-pressure cutoutBthe relief valve should open and let excess ...

2、If the teacher were talking too much i

If the teacher were talking too much in class the students would not be learning.（）A正确B错误

3、Exhaust temperature increases in all

Exhaust temperature increases in all cylinders, the possible cause may be（）(1) increased scavenging air temperature(2) air in fuel pumps and fuel valves(3) fouling of air and gas passagesA(1)+(2)B(1)+(3)C(2)+(3)D(1)+(2)+(3)

4、If the jacket water temperature rises

If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST （）Aplace standby cooler in operationBreduce engine loadCcheck thermostatic valveDclean sea water strainer

5、If the temperature drops low enough, o

If the temperature drops low enough, oil will not flow, （） just tell us the temperature.AHash pointBViscosityCPour pointDCetane number

6、If a diesel engines exhaust temperatur

If a diesel engines exhaust temperature is abnormally high, the cause could be（）Atoo light of a loadBinjection timing is too earlyCoverloading of the engineDtoo low of a compression ratio