The large diameter pipes that transport sewage to the treatment plant are called

A. trunk lines
B. lateral lines
C. local mains
D. interceptors


Answer: D

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The benefits of electric baseboard heating are that ____.

A. each room can be controlled individually B. they are inexpensive to install C. they operate on a 24-V power supply D. Both a and b.

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Competitive livestock judging began with an organization now known as the ____________________.

Fill in the blank(s) with the appropriate word(s).

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An electric company must decide between two op­tions for managing the blowdown water from its cooling tower. Option 1 is to continue the lease on 50 acres of land for another 5-year period and dis­pose of the water by spray irrigation. The land­owner will move the pipe around as necessary and maintain the spray nozzles and valves. The previ­ous lease cost $125,000 per year with payments due midway through each year. Now the land­owner will require beginning of year payments of $180,000 each year. Option 2, which releases the 50 acre tract of land, involves purchasing a treatment system that will allow the recycling of most of the blowdown water. This system will have an initial cost of $1,600,000 and an AOC of $58,000 per year. How­ever, the company will save $220,000 per year

be­cause it will not have to purchase as much make-up water as with option 1. At the end of 5 years, the company will be able to sell the equipment back to the local equipment supplier for 30% of the first cost. If the electric company uses a MARR of 15% per year, should it continue to lease (defender) or purchase the treatment system (challenger)? What will be an ideal response?

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Open loop water source systems normally draw the water from

A) a nearby lake or pond B) city water C) a shallow well D) a deep well

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