____ is defined as the longitudinal retarding force exerted by air or other fluid surrounding a moving object.
a. Lift
b. Drag
c. Air
d. Rotor
b. Drag
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What tool permits the use of mechanically produced letters and no unused leftovers?
a. press-on letters c. straightedges b. Ames lettering guide d. a lettering machine
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When resources are not allocated in a manner that is consistent with demands of society, the market fails, and regulation occurs
Indicate whether the statement is true or false
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When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is _____
a. HFC-410A b. HFC-134a c. HFC-407C d. HCFC-22
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The safety valve discharges automatically at the pressure of:
a. 100 psi b. 50 psi c. 150 psi
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