The two main types of fan drives are:
A) Planetary gear drive and worm gear drive. B) Direct drive and belt drive.
C) Magnetic drive and hydrodrive. D) Serpentine belt and chain drive.
B
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An IR remote control sends a 25-bit sequence every 0.01 s. The data rate of this remote control equals _______ bps.
Fill in the blank(s) with the appropriate word(s).
Information display systems used in connection with Class E Fire Alarm Signal Systems shall be of an approved electrically supervised type. The indicating devices shall describe
A. the purpose they serve B. the name of the manufacturer C. the date of system installation D. the source of the power supply
Which of the following laws states that each parent provides one of the two forms of a gene for each particular trait?
a. variegation c. dependent inheritance b. segregation d. independent assortment
What is a characteristic of a material that is flammable?
A. It burns B. It is corrosive C. It is poisonous D. It is acidic