无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

The primary task of the compressed air system is to deliver the starting air necessary for （）

A.starting the ME
B.starting the emergency electric alternator
C.driving the main turbine
D.driving the turbocharger

你可能感興趣的試題

單項選擇題

The starting air bottle should be pumped up to maximum pressure by the （） before start of the engine.

A.air compressor
B.refrigeration compressor
C.vacuum pump
D.purifier

單項選擇題

The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called （）.

A.boiling off
B.flash evaporation
C.condensation
D.none of the above