At the center of a tree is a small core called the ____.
A. heartwood
B. pith
C. bark
D. annular ring
Answer: B
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Remote control is accomplished by running ____ control wire(s) between the valve and a control device.
a. a single b. two pairs of c. a thin d. a single pair of
____________________ is when a fully charged battery continues to receive a charging current.
Fill in the blank(s) with the appropriate word(s).
"Breakdown voltage" is the voltage at which a Zener diode will do which of these?
A) Sustain damage as a result of current overload B) Allow reverse current to flow C) Stop the flow of reverse current D) Stop the flow of either forward or reverse current
In terms of external code memory (ROM/EPROM), the 8051 allows
A) 256 k code memory. B) 64 k code memory. C) 32 k code memory. D) 128 k code memory.