單項(xiàng)選擇題The loss of （） from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.

A.lubricating oil
B.compressed air
C.cooling water
D.sealing ring


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The joint face between the cylinder cover and the liner is arranged （）the combustion process as possible.

A.such far away from
B.such near by
C.as far away from
D.as near by

2.單項(xiàng)選擇題The interface between the liquid seal (water) and the oil should be positioned （） possible to the bowl periphery.

A.as far as
B.as soon as
C.as close as
D.as closer as

3.單項(xiàng)選擇題The inner part of the condenser should be cleaned with （）.

A.gas oil
B.diesel oil
C.chemical compound
D.Freon-12

4.單項(xiàng)選擇題The injector pump is operated by a cam which drives the plunger （）.

A.top and bottom
B.to and fro
C.up and down
D.back and forth

5.單項(xiàng)選擇題The injector pump is operated by a cam which drives the （） up and down.

A.piston
B.drum
C.plunger
D.barrel