A(n) ____ flip-flop is useful where only one data bit (1 or 0) is to be stored.
A. RS
B. Clocked RS
C. D
D. JK
Answer: C
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The stretcher is laid in a vertical position with the shortest, widest side exposed at the front of the wall.
Answer the following statement true (T) or false (F)
A mechanical contractor's normal sequence in which drawings are produced in house for a construction project is _____.
a. coordination drawings, cut lists, shop drawings b. shop drawings, mechanical plans, cut lists c. cut lists, shop drawings, mechanical plan d. shop drawings, coordination drawings, cut lists
In some conventional fire alarm systems using a positive alarm sequence, alarm delay is usually adjustable for a period of up to _____.
a. three minutes b. four minutes c. five minutes d. six minutes
Which of the following statements about converting a system from one refrigerant to another is incorrect?
a. Synthetic and mineral oils are completely compatible. b. A new metering device may be required. c. Equipment capacity may change with the new refrigerant. d. Gaskets and O-rings may have to be changed.