97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<i id="7bler"></i>

<pre id="7bler"><strong id="7bler"></strong></pre>

<pre id="7bler"><strong id="7bler"></strong></pre>

<ruby id="7bler"><output id="7bler"></output></ruby>

單項選擇題

Pyrometers commonly found on diesel engine exhaust systems, consist of（）

A.pyrostats and a voltmeter
B.a gas-filled bellows, a tube and a pressure gauge
C.thermocouples and a voltmeter
D.ammeters and thermocouples

你可能感興趣的試題

單項選擇題

Low compression in a diesel engine can be caused by （）

A.clogged coolant passages
B.a leaking cylinder head gasket
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings

單項選擇題

In a four-stroke cycle diesel engine the intake valves open （）

A.before TDC and close after BDC
B.after TDC and close after BDC
C.before TDC and close before BDC
D.after TDC and close before BDC

<ruby id="ymlfj"><xmp id="ymlfj"></xmp></ruby>

<blockquote id="ymlfj"></blockquote>