When evacuating the system, what position should all service valves and manifold gauge valves be in?

What will be an ideal response?


Open position

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____ is by far the biggest rodeo with prize money over $2 million.

A. Houston, Texas B. Las Vegas, Nevada C. Scottsdale, Arizona D. Calgary, Canada

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An anti-lock braking system ABS will

a. shorten your stopping distance. b. let you drive faster. c. keep your wheels from locking when you brake hard. d. increase your vehicle's stopping power.

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Answer the following statement(s) true (T) or false (F)

1. Temporary currents flowing in the circuit until the overcurrent device opens are considered “objectionable” and are not permitted. 2. Due to data processing equipment being sensitive to electrical noise on the equipment grounding conductor, it is permitted to isolate the equipment from the “dirty ground” and connect the equipment to only a local ground rod. 3. Electrical systems that are permitted to be installed as ungrounded are usually not grounded so the first ground fault on the system will not result in operation of an overcurrent device. 4. The owner of the premises can choose whether the following circuits are grounded or remain ungrounded: a crane that operates over combustible fibers, circuits in inhalation anesthetizing locations of hospitals, and 15-volt circuits for swimming pool lighting derived from a transformer.

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Why do air conditioning evaporators normally operate at 40°F?

What will be an ideal response?

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