单项选择题
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
点击查看答案&解析
相关考题
-
单项选择题
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 -
单项选择题
（） 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 -
单项选择题
（） is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.
A.Refrigeration
B.Air conditioning
C.Ventilation
D.Heating
