单项选择题
A.is scavenged B.is atomized with fuel oil C.be scavenged D.be atomized with fuel oil
It is very important that each cylinder should be （） sc...
单项选择题It is very important that each cylinder should be （） scavenged before the charged air is compressed.
A.well B.good C.excellent D.respectively
It is necessary to remove （） from the cooling water spa...
单项选择题It is necessary to remove （） from the cooling water spaces to improve heat transfer.
A.lime B.frost C.scale D.scar
It is necessary to remove （） from the cooling spaces.A....
单项选择题It is necessary to remove （） from the cooling spaces.
A.scar B.scale C.spur D.bilge
