___________________ is when a chemical, infectious material or other agent enters or is in direct contact with the body.
Fill in the blank(s) with the appropriate word(s).
Exposure
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How many diodes are required to convert three-phase AC power to high-efficiency DC power?
a. Two b. Four c. Six d. Eight
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For the circuit in Fig. 11.79, find V? and the input power factor.
 FIGURE 1.png)
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How many turns of the index crank are required to index 540 minutes?
A) 5 turns B) 7 turns C) 1 turn D) 3 turns
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What are the two general categories of humidifiers?
A) Wet and dry B) Those that rely on heated air and those that supply their own energy to evaporate water C) Packaged and split system D) Condensing and noncondensing
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