单项选择题
A.longitudinal girders B.transverse girders C.fore girders D.aft girders
The bedplate must be rigid enough to support the weight...
单项选择题The bedplate must be rigid enough to support the weight of the rest of the engine, and maintain the crankshaft, which sits in the bearing housings in the （）, in alignment.
Pressurized air enters the cylinder via the inlet ports...
单项选择题Pressurized air enters the cylinder via the inlet ports and pushes the remaining exhaust gas from the cylinder in a process known as “（）”.
A.charging B.super charging C.scavenging D.exhausting
It is during （） that work energy is being put into the ...
单项选择题It is during （） that work energy is being put into the engine; during the other 3 strokes of the piston, the engine is having to do the work.
A.the suction stroke B.the compression stroke C.the expansion stroke D.the exhaust stroke
