Which of the following is not a type of radial lip seal?
A. pressed
B. bonded
C. cased
D. dual-element
Answer: A
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Dish antennas are capable of very high signal gains by focusing energy onto a very narrow ___________
A. beamwidth B. bandwidth C. current D. transmission line
A 4-input AND gate has a high output when
A) all inputs are high. B) no inputs are high. C) all inputs are low. D) one input is high.
How does an automatic expansion valve prevent liquid floodback in a system?
a. It is not capable of preventing floodback. b. Keeping the evaporator pressure low prevents floodback. c. Keeping the evaporator temperature low prevents floodback. d. Keeping the evaporator pressure high prevents floodback.
A tool used for safe, flameless soldering of pipe is a
A. hand torch B. special purpose assembly tool C. soldering gun D. plasma cutter