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®.
How is the common roundworm transmitted, and can it be dangerous to humans?
What will be an ideal response?
Another name for rectangular coordinate system is
a. polar coordinate system b. cylindrical coordinate system c. square coordinate system d. Cartesian coordinate system
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