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
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
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
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