Which is more suitable for large commercial type applications?
A) oil or kerosene heating source B) electric heating source
C) steam heating source D) gas heating source
D
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Which of the following is true with regard to steel erection?
a. Respirators are never needed when welding. b. A hot work permit may be required when welding. c. Welding epoxy-coated surfaces is safer than welding bare metal. d. Eye protection is not necessary when wearing a welding helmet
ACR copper tubing is:
A) Type L, dehydrated copper tubing. B) Copper tubing with added metallurgical alloys which resist corrosion from the refrigerant. C) Any type of copper tubing so long as it has been dehydrated. D) Type M, dehydrated copper tubing.
A parallel-in, serial-out shift register is loaded initially with 1010. What will the register contain after two clock pulses if the serial input is LOW?
A) 0001 B) 0010 C) 1110 D) 0011
Light-emitting diodes (LEDs) are among the most common devices found in the electrical/electronics field.
Answer the following statement true (T) or false (F)