The combustion of larger molecules,（）have multiple carbon-carbon bonds involves a more complex series of reactions.
- Awhat
- Bwhich
- Cthat
- Dwho
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1、Let H （） the quantity of heat which ha
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2、（） is the control of temperature and h
（） is the control of temperature and humidity in a space together with the circulation, filtering and refreshing of the air.ARefrigerationBAir conditioningCVentilationDHeating
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3、The delivery rate of an axial-piston h
The delivery rate of an axial-piston hydraulic pump is controlled by varying the position of the （）.Asliding blockBpintleCreaction ringDtilting box or swash plate
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4、The designing of a satellite in the h
The designing of a satellite in the heavenly environment is not absolutely an easy job.Aby all meansBby any meansCby every meansDby no means
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5、The spreading of fire as a result of h
The spreading of fire as a result of heat being carried through a vessels ventilation system, is an example of heat transfer by （）.AconductionBconvectionCradiationDwindage
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6、The output voltage of a 440 volt, 60 h
The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the （）.Aprime mover speedBexciter output voltageCload on the alternatorDnumber of pole