When checking the flame-sensing signal from a combined HSI/flame sensor, the meter used should show a current of about _____.

a. 20?A DC
b. 10?A DC
c. 0.5?A DC
d. 0.1?A DC

b. 10?A DC

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Perform the computations below and report with the answer rounded to the proper number of significant digits.

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____ waterproofing sheets are frequently used for projects in which waterproofing must be of uncompromised security.

A. Lead B. Cement-based C. Bentonite clay D. Chlorinated polyethylene

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What is a continuity tester used for?

What will be an ideal response?

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Both _______ and ____________ are widely used in home construction today.

A. Copper and steel B. Cast iron and steel C. Cast iron and copper D. CPVC and PEX

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