The fresh air coming in through the inner air ports， is compressed by（） to a higher pressure.
举一反三
- Air tends to flow from a _______ pressure area to a _______ pressure. A: high, lower B: low, higher C: high, high D: low, low
- The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.
- 智慧职教: Compressed air is supplied by air compressors to air receivers.
- We should open the window often to let ( ) in . ( ) A: fresh air B: fresh airs C: a fresh air D: fresh the air
- In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve? A.Noise coming from that air starting valve B.Continuous operation of the starting air compressor C.Zero air pressure in the air starting system D.Overheated starting air pipe to the cylinder head