The ____________________ compressor uses a flexible synthetic rubber membrane to produce a pumping action.
Fill in the blank(s) with the appropriate word(s).
diaphragm
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NEC Article 440, Part V covers _____.
a. requirements for motor compressor controllers b. the control and protection of fixed electric space heating equipment c. digital control systems d. resistors and reactors
Leopard frogs prefer _____, but they can also be found in grasslands, ponds, and slow-moving streams
a. mountains b. deserts c. forests d. marshes
Technician A says that mild steel trailer frames can be welded using MIG welding equipment and general purpose steel filler wire. Technician B says that when extending a mild steel trailer I-beam ladder frame, the weld must be performed at a 45-degree angle. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
What applications are best suited for console through the wall PTAC units?
A) Sound recording studios B) Grocery stores C) Hotels and motels D) Large retail stores