The symbol shown in the figure above is used to denote a low-voltage _____.



a. thermistor

b. transformer

c. triac

d. timer


b. transformer

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When delegating, the crew leader should make sure the crew member understands what to do and _____.

a. the degree of risk involved b. has read the OSHA regulations c. who should be blamed if there is a problem d. their level of responsibility

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As illustrated in the accompanying figure, ____ beams are popular, because they are strong and can be manufactured in any length and depth.

A. titanium B. built-up wood C. LVL D. steel

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86,000 expressed in scientific notation equals ________

A) 8.6 × 10-4 B) 8.6 × 103 C) 860 × 102 D) 8.6 × 104

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The expansion device in a cooling system _____

A) raises the temperature of the refrigerant B) acts as a heat exchanger C) provides a pressure drop D) raises the pressure of the refrigerant

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