<small id="6rjpf"></small>

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

你可能感興趣的試題

單項選擇題

The evaporating pressure in R22 vapor compression refrigeration plant should be （） atmospheric.

A.below
B.above
C.equal to
D.much larger than

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

<code id="zgv7l"></code>