The correct Boolean expression for the transistor circuit below is:
A. C = A · B
B. 
C. 
D. C = A + B
E. 
Answer: E
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With programmable logic controllers, each line of logic must end with a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
Which statement identifies the main difference in the ways sheet and roll materials are installed?
a. Sheet materials are measured and cut to size first, while roll materials are applied directly from the roll. b. Sheet materials are banded in place, while film membranes are glued to the insulation. c. Sheet materials are stapled, while roll materials are held in place by friction, like food wrap. d. Roll materials are taped to the insulation, while sheet materials are banded.
What is used for capacity control on centrifugal liquid chillers?
a. Cylinder unloading b. Hot gas bypass c. Inlet slide valves d. Inlet guide vanes
When taping hoses together, the hoses should be wrapped for about ____ in. out of every ____ in.
A. one, five B. two, ten C. two, twelve D. five, ten