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單項選擇題

Should a person be overcome due to lack of oxygen and high concentration of refrigerant, treat with（）.

A.fresh water
B.fresh air
C.salt water
D.artificial respiration

你可能感興趣的試題

單項選擇題

If liquid refrigerant accidentally comes in contact with the eyes, （） immediately.

A.rub the eyes
B.irritate the eyes
C.wash the eyes with a heavy boric acid solution
D.obtain medical help

單項選擇題

（） is the circulation and refreshing of the air in a space without necessarily a change of temperature.

A.Refrigeration
B.Air conditioning
C.Ventilation
D.Heating

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