單項(xiàng)選擇題A number of cylinder liners are enclosed in one cast iron casing to form a （）.

A.cylinder cover
B.cylinder block
C.cylinder frame
D.bed-plate


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題A main bearing consists of two shells which are secured by means of studs and （）.

A.tie rods
B.through bolts
C.lead wires
D.bearing caps

2.單項(xiàng)選擇題A lubricant often has to perform many duties in any situation, in addition to its fundamental job of （）.

A.resisting oxidization
B.reducing friction
C.promoting moving speed
D.developing inertia

3.單項(xiàng)選擇題A level gauge for a tank is to （）.

A.give the pressure
B.give the contents
C.give the shape of the tank
D.give the accuracy level

4.單項(xiàng)選擇題A hot air start pipe indicates that there is （）.

A.inefficient cooling
B.a leaking air start valve
C.a clogged drain valve
D.a leaking air bottle

5.單項(xiàng)選擇題A high temperature alarm or （） which will melt is used to guard against the explosion of compressor air pipelines.

A.a flame trap
B.a relief valve
C.a fusible plug
D.a bursting cap