If you do not have a CB radio, what is the first thing you should do at an accident scene?
1. Protect the area
2. Notify the area
3. Care for the injured
Answer: 1. Protect the area
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List the steps needed in the construction of a soil-nailed excavation support system.
What will be an ideal response?
The following are characteristics of a water molecule
A) The H to O to H angle is approximately 90°C. B) It is held in soils by adhesion but not adsorption. C) The two H atoms are on diametrically opposite ends of the molecule. D) It has a positive and a negative side. E) It is attracted to surfaces with negative but not positive charges.
______ substances can, when allowed to mix or come into contact with other substances, create harmful gases or start a fire
A. Toxic B. Reactive C. Flammable D. Corrosive
Hepatitis can be caused by contact with _____.