Consider a system with a microprocessor (point 1 ) whose data bus connects (point 2 ) to an input/output device (point 3). At which point is an octal latch required?
A) point 1 B) point 2 C) points 2 and 3 D) point 3
D
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Which nerve innervates the diaphragm?
A) musculocutaneous B) obturator C) axillary D) saphenous E) phrenic
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About when did the Little Ice Age begin?
a. 1060 b. 1125 c. 1270 d. 1400
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The purpose of an electrical overload device is to protect against:
A) Power surges. B) Excessive voltage. C) Excessive resistance. D) Excessive current.
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How does the reversing valve switch a heat pump between heating and cooling modes?
a. It reverses refrigerant flow through the compressor. b. It causes both check valves to allow refrigerant flow to the indoor coil. c. It causes both metering devices to meter refrigerant. d. It reverses refrigerant flow through the indoor and outdoor coils.
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