题目内容
When cooling is by direct expansion, a separate( )is fitted in the unit for winter heating.
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If air at 95 'C dry bulb temperature and 50% relative humidity is conditioned to 75 C dry bulbtemperature and 50% relative humidity, it is an example of( )
Which of the following functions is NOT one of the functions of air conditioner?( )
A wise precaution for an engineer to take is to go through accommodation and public roomsperiodically recording( )
切削速度的计算公式()是正确的
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