The tubing or pipe for natural gas supply to a gas heating unit is ____________________.

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


wrought iron

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When using a megohmmeter, an important safety precaution is not to touch the test leads during the measurement.

Answer the following statement true (T) or false (F)

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To retrieve stored diagnostic trouble codes, a technician needs a(n) ________

A) Scan tool B) Paper clip C) Wireless connection to an electronic tester D) Desktop computer

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Which of the following statements is TRUE of specific heat capacity?

A) Each substance has its own specific heat capacity regardless of state. B) All substances in a given state have the same specific heat capacity. C) Specific heat cannot be calculated for every substance. D) Specific heat capacity is only relevant to substances in the solid state.

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Why should special safety protection always be used when driving ballistic concrete nails?

A) Because of broken nail bits B) Because of fumes C) Because of flying chips of cracking concrete D) Because of random sparks

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