A typical nitrogen cylinder is charged to a pressure of roughly _____.

a. 3,500 psig
b. 2,000 psig
c. 1,000 psig
d. 250 psig


b. 2,000 psig

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Una escalera recta se debe usar en suelo estable y nivelado, a menos que:

a. la escalera venga equipada con bases antideslizantes especiales. b. esté asegurada en la parte superior y en la parte inferior para evitar que se mueva. c. haya alguien al pie de la escalera que la sostenga. d. haya alguien que sostenga la escalera desde arriba.

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Why is granite the preferred stone for kitchen counter tops?

What will be an ideal response?

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Biological pest controls almost always poison the environment

Indicate whether the statement is true or false

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?What is the major purpose of pre- and post-heating cast iron for welding?

A. ?To allow the weld to fuse deeper into the joint. B. ?To control the rate of temperature change. C. ?To reduce the carbon content in the casting around the weld which makes it less brittle. D. ?It helps the weld metal flow more evenly into the crack.

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