你可能感興趣的試題

If a refrigeration compressor will not start, the reason may be （）.

A.the pressure regulating valve is not closing
B.an excessive lack of refrigerant in the system
C.badly leaking discharge valves
D.worn piston rings

單項(xiàng)選擇題

Which of the following statements describes the relationship between flash point and ignition temperature?（）

A.Both are higher than normal burning temperatures
B.The flash point is always higher
C.The ignition temperature is always higher
D.They are not necessarily related

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The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called （）.

你可能感興趣的試題

If a refrigeration compressor will not start, the reason may be （）.

Which of the following statements describes the relationship between flash point and ignition temperature?（）

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