A ____ is a unit that combines a means of mixing room air and outside air to ventilate the room while also warming it.
A. unit ventilator
B. space heater
C. ventilation mixer
D. mix unit
Answer: A
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Thrombocytopenia is defined as a deficiency of
A) antibodies. B) erythrocytes. C) platelets. D) eosinophils. E) neutrophils.
All power windows fail to operate from the independent door switches but all power windows operate from the master switch. Technician A says that the window lockout switch may be on. Technician B says that the power window relay could be defective. Who is right?
A) A only
B) B only
C) Both A and B
D) Neither A nor B
The current in any branch of a circuit supplied by a multipower source can be determined by finding the current produced in that particular branch by each of the individual power sources acting alone. This simplification is done in accordance with _____.
A. Thevenin's theorem B. Norton's theorem C. the superposition theorem D. Kirchhoff's laws
All of the following statements are true EXCEPT:
A. a knock sensor has a piezoelectric crystal sensing element that senses vibration and creates a voltage signal of 100 to 200 mV. B. an oxygen (O2) sensor is a variable DC voltage generator. C. pulse generators are signal generators. D. in a variable AC voltage generator, a magnetic pickup generates an AC analog signal with a positive and negative sine wave.