Which of the following is commonly used to build a cofferdam?


a. Soil
b. Timber piles
c. Concrete piles
d. Sheet piles


d. Sheet piles

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Explain two methods by which the buckling of a member may be prevented.

What will be an ideal response?

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All variable voltage inverters lack ____ protection, and they cannot handle oversized motors.

A. overspeed B. overheating C. short-circuit D. open-circuit

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A homeowner is having a well installed in an area where the water table is 30 feet below the surface. The type

of well installed will most likely be dug or _____. a. driven b. drilled c. bored d. deep

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If your car goes into water, you should

a. wait for water to rush in and let it out in small breaths through your nose b. call the fire department immediately c. remove yourself before it starts to sink

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