99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項選擇題

Cooling the intake air supplied to a diesel engine will （）.

A.reduce mean effective pressure
B.decrease average compression pressure
C.decrease air charge density
D.increase power output

你可能感興趣的試題

單項選擇題

Excessive vibration of an automatically fired auxiliary boiler can be caused by （）

A.air or water in the furnace
B.combustion pulses
C.fuel oil pump failure
D.flame failure

單項選擇題

When there is a flame failure in an automatically fired auxiliary boiler, the （）.

A.air supply is shut off
B.fuel supply is shut off
C.water supply is shut off
D.safety valve lifts

<pre id="vvnca"><legend id="vvnca"></legend></pre>

<pre id="vvnca"><acronym id="vvnca"></acronym></pre>