The materials used to protect the building from the weather must be shown on the elevations in what four categories?
A. roofing, wall coverings, doors, and windows
B. rails, shutters, eave vents, and chimneys
C. roofing, rails, eave vents, and doors
D. doors, windows, shutters, and chimneys
Answer: A
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Answer the following statement(s) true (T) or false (F)
1. Contacts must be selected according to the proper load. 2. Limit switches may be momentary contact or maintained contact types. 3. Capacitive proximity sensors are designed to detect only metallic targets. 4. Inductive proximity switches operate on the eddy current principle. 5. Some reflector units have a range of 2 feet or more.
Thyristors are solid-state devices that exhibit ____ state(s) of operation
a. one b. two c. four d. eight
An air conditioner with a fixed-restriction metering device is operating with an evaporator saturation temperature of 40°F and a suction line temperature of 42°F. The factory-specified superheat for the current operating condition is 12°F. After checking the airflow and determining that it is within specifications, the technician should:
A) Recover charge because the system is overcharged. B) Add charge because the system is undercharged. C) Leave the charge alone because it is cooling even better than factory specifications. D) Move some of the charge from the low side of the system to the high side of the system to balance the charge.
In plotting curved data, the term ____ refers to the point at which the curve ends.
A. point of curve (PC) B. termination of curve (TC) C. point of finish (PF) D. point of tangency (PT)