What kind of chemical do you use to remove old polish for customer who has artificial nails?
What will be an ideal response?
None-acetone
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____ are permanent fasteners used to join two materials.
A. Washers B. Reinforcing bars C. Rivets D. Steel bolts
Which of the following is an incorrect statement regarding the venting of a condensing furnace?
a. The intake and exhaust vents should be close together. b. The diameter of the vent pipe is based on the furnace input, the length of the vent, and the number of elbows. c. Installation guidelines for Category IV furnaces should be followed.
How many duct diameters of length upstream from turns or obstructions is required in a straight round duct to obtain an accurate reading with a pitot tube?
a. 1 b. 2.5 c. 5 d. 7.5
When refrigeration compressors are driven by conventional (nonhermetic) motors, the motors and controls are subject to the requirements in _____.
a. NEC Article 420 b. NEC Article 430 c. NEC Article 440 d. NEC Article 450