单选题If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）Alow exhaust back pressureBair in the fuel systemCgasket blow-by or leakageDincorrect assembly of idler springs
单选题
If an auxiliary diesel engine frequently stalls, the trouble may be caused by （）
A
low exhaust back pressure
B
air in the fuel system
C
gasket blow-by or leakage
D
incorrect assembly of idler springs
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