Considering the two joint preparation methods?mechanical and thermal?the mechanical method is _____
a. less precise
b. slower
c. faster
d. more likely to leave carbon deposits
b
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Two types of takeoff fittings available for sheet metal duct include:
A) Adhesive-backed flanges, trunk ducts with knock-outs. B) Dove tail, adhesive-backed flanges. C) Weld-on stubs, preformed stubs. D) Dovetail, weld-on stubs.
Oversized equipment operates:
A) More efficiently than correctly sized equipment. B) About the same efficiency, but also has reserve capacity. C) At the same efficiency as correctly sized equipment. D) Less efficiently than correctly sized equipment.
The system of pipes in a plumbing system that supply or remove air to relieve pressures below or above atmospheric pressure are called
A. vents B. pressure reducers C. pressure regulators D. relief valves
The 12V battery of the IMA is recharged through the DC/DC converter.
Answer the following statement true (T) or false (F)