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

There are typically three plumb lines and two level lines on a common rafter.


ANS: T

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The majority of southern whites owned no slaves because

A. they opposed slavery. B. they could not afford the purchase price. C. their urban location did not require them. D. their racism would not allow them to work alongside African Americans. E. they feared the possibility of slave revolts.

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Explain why suspended ceilings (sometimes referred to as drop ceilings or false ceilings) are common in most contemporary commercial buildings.

What will be an ideal response?

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Air entering a refrigerant system can eventually lead to compressor failure.

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

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Electrical power systems are usually grounded at the incoming water pipe when the pipe is __________

A. new B. plastic C. metallic D. nonmetallic

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