In an oil cooler circulated by sea water, the oil is at a larger pressure, the result being that any leak in the cooler will mean a loss of （）.

In a four-stroke engine the camshaft rotates at （）.A.ha...

单项选择题In a four-stroke engine the camshaft rotates at （）.

In an engine with air inlet valve and exhaust valve on ...

单项选择题In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.

In an engine with a pot-shaped piston, some lubricating...

单项选择题In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a （） in the crankshaft to the bottom end bearing andthen up a connection rod to the gudgeon pin.