單項(xiàng)選擇題

One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is （）

A.seal water supply be cut off
B.make-up water supply be cut off
C.oil outlet valve closed or not open sufficiently
D.the flow rate of oil is too much

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單項(xiàng)選擇題

To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.

A.2
B.4
C.5
D.6

單項(xiàng)選擇題

Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will （）

A.activate the driers
B.change color
C.secure the compressor
D.add a predetermined amount of liquid drier

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One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is （）

你可能感興趣的試題

To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.

Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will （）

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