Asthe_____againreachesBDC,theexhaustvalveopens,buttheintakevalveremiansclosed.
A: valve
B: pump
C: port
D: piston
A: valve
B: pump
C: port
D: piston
举一反三
- The _______ is the heart of an automboile. A: piston B: engine C: crankshaft D: valve
- A common trouble with the fuel pump plunger or fuel valve spindle is （）.
- ________is simply a valve that measures the temperature of the coolant. A: Oil pump B: Pressure cap C: Thermostat
- In some engines, the cylinder_____ also carries the camshaft . A: head B: block C: piston D: port
- When received the order "finished with engine" which of the following operations is wrong?____. A: stop the O pump, S.W pump, F.W pump B: stop the priming O transfer pump C: engage the turning gear D: open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover