An orifice plate is a non-intrusive flow sensor
Indicate whether the statement is true or false
FALSE
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Brazing fluxes are more _____ than soldering fluxes.
a. expensive b. corrosive c. flammable d. toxic
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An important characteristic of MAPP® gas is that it _____.
a. is odorless b. burns at a much lower temperature than acetylene c. can be used at pressures over 15 psi d. is much less stable than propane
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What type of fitting should be used for EMT in a wet location?
a. Compression b. Plastic bushing c. Setscrew d. Metallic bushing
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Which type of duct material is used in low-traffic areas and provides insulation to the duct system?
A. galvanized metal B. fiberglass-wrapped, spiral duct (flexible duct) C. fiberglass, fiberboard sheeting D. round sheet metal
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