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 “（）”.

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.

In the suction stroke, the crankshaft is rotating clock...

单项选择题In the suction stroke, the crankshaft is rotating clockwise and the piston is moving （） the cylinderThe inlet valve is （） and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.