Chemical grounding electrodes are typically

A. constructed from 2-in. copper pipe, have weep holes, and are not suitable to be driven.
B. constructed from galvanized water pipe, have weep holes, and are suitable to be driven.


A. constructed from 2-in. copper pipe, have weep holes, and are not suitable to be driven.

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? Identify and state the historical significance of the Kansas-Nebraska Act.

What will be an ideal response?

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Which of the following is NOT known as a greenhouse gas?

a. O2 c. CH4 b. CO2 d. N2O

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Gas trapped in the compressor clearance space is expanded at the beginning of the suction stroke. What effect does this have on the system?

A) It has no measurable effect on system performance B) It increases efficiency by converting pressure into mechanical energy, helping to push the piston down. C) It makes the refrigerant colder because it is expanded more than once. D) It reduces compressor capacity

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What advantage does a two-part adhesive system have over a one-part system?

What will be an ideal response?

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