<strong id="asaus"><abbr id="asaus"></abbr></strong>

<option id="asaus"><small id="asaus"></small></option>

<noscript id="asaus"><small id="asaus"></small></noscript>

<sup id="asaus"><acronym id="asaus"></acronym></sup>

<sup id="asaus"><dd id="asaus"></dd></sup>

單項選擇題

What is the substance called which can readily be converted from a liquid into a vapor, and also from a vapor into liquid with a reasonably narrow range of pressure?（）

A.Refrigerator
B.Refrigerant
C.Cooling medium
D.Brine

你可能感興趣的試題

單項選擇題

In a refrigeration plant the （） need defrosting.

A.fan
B.compressor
C.condenser
D.evaporator

單項選擇題

Hot gas defrosting uses the hot gas from （） to defrost the evaporator.

A.starting air bottles
B.diesel engines
C.boilers
D.refrigeration compressors

<s id="aqwuy"><source id="aqwuy"></source></s>

<sup id="aqwuy"><acronym id="aqwuy"></acronym></sup>

<s id="aqwuy"><code id="aqwuy"></code></s>