Why is knowledge regarding the recovery level for Type II systems with 200 pounds or more of R-22 not important for most technicians?
A) Type II recovery levels are optional by law. B) Few systems are this large.
C) Few systems are this small. D) Enforcement rates for recovery levels are low.
B
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While having a discussion, Technician A says that the estimated life of a joint is eight hours without lubricant. Technician B says that the estimated life is forty-eight hours. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Answer the following statement(s) true (T) or false (F)
1. Most access control systems are connected to the buildings network through a CAT 5 cable. 2. Wiring and cabling for all access control systems must comply with Article 300 of the National Electrical Code. 3. Most door and window contacts are “normally closed”. 4. The installation of class two power sources must comply with Article 725 of the National Electrical Code. 5. The type of sensing device to use in a access control systems typically depends on the layout of the building and the detail in which you need protection.
Research and identify the “fl atteners” Thomas Friedman discusses in his book The World Is Flat: A Brief History of the Twenty-First Century. What impact do these have on manufacturing?
What will be an ideal response?
Programmable controllers contain ____ electronic timers.
A. internal B. external C. no D. transformed