Explain why the wall and column footings must be placed below the frost line.

What will be an ideal response?


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True or false? Forests are a good example of a nonexhaustible resource because they grow back after we use them

What will be an ideal response?

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The atomic symbol H stands for _____.? ?  

A. atomic hydrogen? B. molecular hydrogen? C. water? D. porosity?

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A final step in troubleshooting is to check the measured results with the calculated _________

A. values B. testing instruments C. analyses D. measurements

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A shop that services refrigerant systems does not have to have a refrigerant recovery and recycling system.

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

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