(Complete this sentence) The purpose of a UN number is to ______________.

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


Should there be a spill or release emergency responders in any country may not read or understand English but they do understand the Arabic numeral system. They can locate that UN number in their translated Hazardous Materials Tables and identify the chemical respond appropriately.

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Remove the spark plug wire before turning the mower to measure or sharpen the blade

Indicate whether the statement is true or false

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A qualified WPS is usable for ____.

A. six months B. one year C. an indefinite length of time D. an indefinite length of time, usually until a more efficient process is found

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Mixed liquor is a term used to describe the

a. contents of a sludge digestion tank b. contents of a activated sludge aeration tank c. film of microorganisms growing on a trickling filter d. drink a treatment plant operator has with his or her lunch e. contents of a sludge thickening tank

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Each of three equal capacitors in series has _____

a. one-third the applied voltage b. one-half the applied voltage c. three times the applied voltage d. the original value of the applied voltage

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