单选题Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the（）Acooling water leaving each cylinderBfuel oil entering the injectorCexhaust gases at various locationsDlube oil at the bearing supplies
单选题
Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the（）
A
cooling water leaving each cylinder
B
fuel oil entering the injector
C
exhaust gases at various locations
D
lube oil at the bearing supplies
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