The heat from a(n) _____ is transmitted primarily by radiation.
A. electric baseboard heater
B. heat pump
C. electric furnace
D. electric heating cable
Answer: D
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This diagram suggests which type of radiation penetrates most deeply?
?
A. ?gamma rays B. ?beta particles C. ?alpha particles D. ?electron particles
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? =
A. ?0.167 B. ?0.6 C. ?1.67 D. ?6
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The OSI layer responsible for error detection, framing, error recovery, and flow control is the:
A) presentation layer B) session layer C) physical layer D) transport layer E) data link layer F) application layer
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Which SAE standard(s) must be referred to on the label of approved HFC-134a refrigerant recycling machines?
A. SAE J1988 or SAE J1627 B. SAE J1989 or SAE J2791 C. SAE J1990 or SAE J2297 D. SAE J2210 or SAE J2788
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