单项选择题
A.will be speeded up B.should be slowed down C.must slow down D.have to be slow down
Once a fire is detected the engine should be slowed dow...
单项选择题Once a fire is detected the engine should be slowed downOn no account （）.
A.the trunking should be opened up B.should the trunking be opened up C.the trunking should not be opened up D.should the trunking not be opened up
On top of scavenging air box is mounted a strong cast i...
单项选择题On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）
A.cooling jacket B.cylinder liner C.piston crown D.cylinder cover
On the top of the cylinder is mounted the cylinder cove...
单项选择题On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
A.the camshaft B.the flange C.the ridge D.the bulge
