单选题An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）AexhaustBair box pressureCbrake main effective pressureDall of the above
单选题
An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）
A
exhaust
B
air box pressure
C
brake main effective pressure
D
all of the above
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