Wireless standards are established by ____.
A. professional and official organizations
B. consortium of companies
C. Both A and B
Answer: C
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Some of the materials used as semiconductors have a resistance almost halfway between that of glass (____________________) and copper (conductor).
Fill in the blank(s) with the appropriate word(s).
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Which terminal of the OBD-II data link connector is the signal ground for all vehicles?
A) 4 B) 1 C) 3 D) 5
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To resist corrosion, the recuperative cell on a condensing oil furnace is made of:
A) Aluminized steel. B) High-quality stainless steel. C) Teflon-coated steel. D) Heavy galvanized steel.
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Proximity detectors are designed to detect the presence or absence of some object.
Answer the following statement true (T) or false (F)
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