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

<pre id="4xscl"></pre>

<ruby id="4xscl"><xmp id="4xscl"></xmp></ruby>

<ruby id="4xscl"><xmp id="4xscl"></xmp></ruby><dd id="4xscl"></dd>

單項(xiàng)選擇題

Which of the following may cause that the compressor cuts off on high pressure cutout in a refrigeration plant? （）
(1) faulty condensing
(2) too few refrigerant
(3) high discharge pressure

A.any of (1) and (3)
B.any of (1) and (2)
C.any of (2) and (3)
D.any of (1), (2) and (3)

你可能感興趣的試題

單項(xiàng)選擇題

The device used for low-pressure control and high-pressure cutout on a compressor is called （）.

A.cutout
B.controller switch
C.pressure controller
D.cutout switch

單項(xiàng)選擇題

In a vapor compression refrigeration the evaporating pressure is maintained constant by the action of the （）, which removes vapor from the evaporator at the same rate at which it is formed.

A.evaporator
B.compressor
C.condenser
D.none of the above

<pre id="4i8wg"><strong id="4i8wg"></strong></pre>

<sup id="4i8wg"><pre id="4i8wg"><div id="4i8wg"></div></pre></sup>