Which of the following backflow prevention methods is approved for all hazards?

a. air gap
b. atmospheric-type vacuum breaker
c. double-check valve assembly
d. pressure-type vacuum breaker


ANSWER: a

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Hybrid cattle with a "buffalo" appearance are called ____________________

Fill in the blank(s) with correct word

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A manufacturer of industrial grade gas handling equipment wants to have $500,000 in an equipment replacement contingency fund 10 years from now. If the company plans to deposit a uniform amount of money each year beginning now and continuing through year 10 (total of 11 deposits), what must be the size of each deposit? Assume the account grows at a rate of 10% per year.

What will be an ideal response?

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Fearing a return of political extremism, fragile western European democracies turned to whom for support and protection?

a. Great Britain b. France c. the United States d. the Soviet Union

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