What lubricants can be used with HFCs?
A) Ethylene glycol and propylene glycol B) Polyester and rayon
C) Mineral oil and alkyl benzene D) Polyalkylene glycol and polyol ester
D
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What is the distinction between source energy and site energy?
What will be an ideal response?
Living systems are abiotic
Indicate whether the statement is true or false
Quartz and glass panel electric units are classified as ____.
A. natural-convection heaters B. forced-convection heaters C. forced-draft conductors D. radiant heaters
The primary difference between a 3-bit up-counter and a 3-bit down-counter is:
A) An up counter's output decreases by one with each input clock pulse whereas a down counter's output increases by one with each input clock pulse. B) In a normal count sequence, a 000 is followed by 001 (in an up-counter) and by 111 (in a down-counter). C) An up counter's output increases by one with each input clock pulse whereas a down counter's output decreases by one with each input clock pulse. D) Both B and C E) Both A and C