Which glass type is heat-modified glass (also called heat-treated glass) and what is the purpose of heat treating glass?
What will be an ideal response?
The glass that is heat modified is annealed glass. There are two reasons for heat modifying the glass: (i) to increase
the bending strength of the basic (annealed) glass and (ii) to obtain glass with a safer breakage pattern.
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Flammable detection equipment must sound an alarm before the concentration reaches the _____
a. PEL b. LEL c. UFL d. ULL
A disadvantage of using low-power portable radios is that _____.
a. they are inexpensive b. there is no need to be in visual contact with the operator c. other radios can cause interference d. they can be equipped with microphone/headphone combinations
The effective voltage of an alternating current circuit is ____________________ times its peak voltage.
Fill in the blank(s) with the appropriate word(s).
Sales forecasting is often the basis for much of the other planning that goes on in an
organization.
Indicate whether the statement is true or false.