单项选择题
A.spilled B.overflowed C.sprayed D.injected
The oil quantity for bearing lubrication should be appl...
单项选择题The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.
A.acids B.additives C.heat D.gear
The oil lubricating diesel engine cylinders usually con...
单项选择题The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to （） the acid conditions.
A.invade B.provide C.detergent D.neutralize
The oil is drawn from a drain tank through （）, one of a...
单项选择题The oil is drawn from a drain tank through （）, one of a pair of pumps, into one of fine filters.
A.a strain tank B.a head tank C.a service tank D.a strainer
