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.

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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.

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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

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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

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