Ladders used as exits must be located every 25' in any trench that is over _____.
a. 1' deep
b. 2' deep
c. 3' deep
d. 4' deep
d. 4' deep
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________ is the basis of nearly every enduring relationship in business.
A. Profit B. Compatibility C. Trust D. Need finding
Day length varies with latitude
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. A lightning arrester for TV and radio antennas is simply a grounded wire brought close to, but not touching, the antenna. 2. Industries always use static charge as a tool. 3. Sandpaper grit can be made to lie flat as it is being applied to the paper backing by giving the sand particles a positive charge and the glue-covered paper backing a negative charge. 4. A neutron forcibly taken away from one neutral object and put on another neutral object has gained potential energy. 5. Electrostatic lines of force show the existence of a very real force between two electrically charged objects.
Which of the following is considered to be excellent for use on underground pipes?
a. Phenolic insulation b. Cellular glass insulation c. Fiberglass pipe insulation d. XPS