單項(xiàng)選擇題The main factor which determines the output of each cylinder is ()

A.the cylinder weight
B.the cylinder bore
C.the cylinder length
D.the cylinder cover


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1.單項(xiàng)選擇題The main factor determining the output of each cylinder is the cylinder ().

A.density
B.bore
C.weight
D.material

2.單項(xiàng)選擇題The main bearings are provided with thin-walled (), lined with a copper-lead alloy.

A.steel guides
B.steel shells
C.steel bearing caps
D.pig iron

5.單項(xiàng)選擇題The main bearing metal is a lining ().

A.inside the bearing
B.outside the bearing
C.covering the crankshaft
D.none of the above