A.inwards
B.outwards
C.downwards
D.upwards
您可能感興趣的試卷
你可能感興趣的試題
A.to increase
B.to speed up
C.to prevent
D.to reduce
A.taken away
B.engaged
C.connected
D.sealed off
A.overhaul
B.running
C.blowing down
D.All of the above are correct
A.reciprocating
B.rotating
C.running
D.removing
A.bedplates
B.columns
C.cylinder blocks
D.safety caps
最新試題
The minimum speed an engine must attain before ignition can occur depends upon （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
Proper filtering and straining of fuel oil is important because the （）.
A thrust bearing is used with a propulsion diesel engine to （）.
Combustion knock occurring in a diesel engine can be caused by （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
The main purpose of the piston oil scraper rings is to （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A diesel engine piston ring face is in direct contact with the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.