單項(xiàng)選擇題

Demulsibility of a lube oil is defined as （）.

A.the ability of oil to separate from water
B.the temperature at which oil flows rapidly
C.a measure of the water in a lube oil system
D.an emulsion of different grades of oil

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單項(xiàng)選擇題

When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?（）

A.CO₂
B.Methyl chloride
C.R-22
D.Sulphur dioxide

單項(xiàng)選擇題

Which of the following terms is used to identify the pressure of the liquid entering a pump?（）

A.Suction head
B.Pump head
C.Discharge head
D.Total head

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Demulsibility of a lube oil is defined as （）.

你可能感興趣的試題

When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?（）

Which of the following terms is used to identify the pressure of the liquid entering a pump?（）