A material with four electrons in the valence ring is called ________
A) A compound B) A semiconductor C) A conductor D) An insulator
B
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Why is a living plant popular as a sympathy flower?
What will be an ideal response?
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On internal wet disc brake systems the friction discs are _____________ internally to the rotating wheel.
Fill in the blank(s) with the appropriate word(s).
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Amino acids are classified into two classes.
A. Strong and weak B. Big and small C. Essential and non-essential D. None of these
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Tolerance grades should be as course as possible and still permit satisfactory use of the part
Indicate whether the statement is true or false
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