单项选择题
Steering gears can be arranged with hydraulic control equipment known as a （）, or with electrical control equipment.
A.telemeter
B.telemanometer
C.telemotor
D.telemometer
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相关考题
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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 -
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
