For a fluorescent lamp, the inside of the tube is coated with a phosphor (a fluorescing material) , the air is evacuated, and an inert gas plus a small quantity of is released into the tube.
A) hydrogen
B) helium
C) mercury
D) silicon
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Q1: Where are low-voltage incandescent lamps used, and
Q3: LED lighting could be called " lighting."
A)low-state
B)fluid-state
C)solid-state
D)transistor-state
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Q10: A fluorescent lamp with a 30 in
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