Which B vitamin is needed in body cell metabolism?

a. Riboflavin c. Folic acid
b. Niacin d. Thiamine


C

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To determine the number of lighting circuits, the lighting load of the residence must be calculated. The calculations are based on the ____________________ method outlined in the National Electrical Code ®.

Fill in the blank(s) with the appropriate word(s).

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The first step in almost every welding operation is the ____________________ of the parts to be joined by welding.

Fill in the blank(s) with the appropriate word(s).

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What is the instantaneous voltage (e) of an alternating electromotive force (emf) when it has reached 225° of the cycle?  The maximum voltage (Emax) is 480.0 volts.  Round the answer to the nearest tenth volt.

Fill in the blank(s) with the appropriate word(s).

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In many cases, counters must be strobed in order to eliminate glitches

Indicate whether the statement is true or false

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