An on/off control system ____.

A. is relatively inexpensive
B. is easy to design
C. lacks precision
D. all of the above


Answer: D

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El tiempo de espera para el funcionamiento de los sistemas de alarma con energía secundaria se define en:

a. NFPA 1. b. NFPA 70®. c. NFPA 72®. d. NFPA 101®.

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How is the common roundworm transmitted, and can it be dangerous to humans?

What will be an ideal response?

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Another name for rectangular coordinate system is

a. polar coordinate system b. cylindrical coordinate system c. square coordinate system d. Cartesian coordinate system

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Two technicians are discussing measuring bores with inside micrometers. Technician A says that extension spindles allow the measurement of cylinder bores. Technician B says that once the micrometer is inserted into the bore and extended, it should be tightened and removed. Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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