Color pigments should be of a metallic oxide composition in amounts _____ of the portland cement content.

A. of at least 20 percent
B. not exceeding 15 percent
C. up to 25 percent
D. between 3 and 10 percent


Answer: B

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Which of the following is considered an engineering and administrative control?

A) Reduction of reverberation B) Audiometric evaluation C) Determining whether hazards to hearing exist D) None of the above

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With FCA welding, the voltage is set on the welder, and the amperage is set by changing the ____.

A. cutting speed B. welding speed C. wire feed speed D. drill speed

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Some computer room rack cooling system evaporator coils are fed with _____.

a. liquid refrigerant at a low pressure and always above the dew point of the room b. liquid refrigerant at a low pressure and always below the dew point of the room c. refrigerant vapor at a high pressure and always above the dew point d. refrigerant vapor at a high pressure and always below the dew point

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Using the binary system, if 0 = 0000 0000 and 1= 0000 0001, what does 0000 0100 equal?

A. 100 B. 4 C. 3 D. 2

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