单项选择题
A.gap B.side C.back D.radial
An auxiliary diesel engine may fail to start due to（）A....
单项选择题An auxiliary diesel engine may fail to start due to（）
A.low exhaust back pressure B.high lube oil temperature C.insufficient cranking speed D.excessive fuel atomization
Diesel engine exhaust noise can be reduced in an exhaus...
单项选择题Diesel engine exhaust noise can be reduced in an exhaust muffler by （）
A.changing the direction of exhaust gas flow B.increasing the exhaust gas velocity C.changing the exhaust gas weight D.increasing the exhaust gas static pressure
Misfiring in a diesel engine at light loads can be caus...
单项选择题Misfiring in a diesel engine at light loads can be caused by（）
A.high lube oil temperature B.low lube oil temperature C.excessive cylinder cooling D.high air injection pressure
