单项选择题
A.respectable B.respectful C.respective D.respectively
To start the ejection process the oil feed to the centr...
单项选择题To start the ejection process the oil feed to the centrifuge is first shut off and the oil remaining in the bowl removed by admitting （）.
A.flashing water B.operating oil C.flushing water D.sealing water
To prevent the build up of high stresses engine must no...
单项选择题To prevent the build up of high stresses engine must not be run continuously （）.
A.faster than dead slow speed B.slower than dead slow speed C.with the output of MCR D.at critical speeds
To counteract these undesirable effects cylinder oils u...
单项选择题To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of （） and detergency.
A.salinity B.alkalinity C.acid D.sanitary
