Which of the following PPE is considered optional for plasma arc cutting?

a. Hearing protection
b. Safety glasses
c. A full leather hood
d. High-top shoes or boots


c

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In a Type 3 EES, battery backup power must last for at least _____.

a. 30 minutes b. 60 minutes c. 90 minutes d. 120 minutes

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By 1880, the population of American bison was down to only about 1,000 animals and the species risked extinction

Indicate whether the statement is true or false

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What can cause high superheat in a TEV metered evaporator?

a. Restriction after the receiver b. Pressure drop in the liquid line drier c. Ice or debris in the metering device d. All of the above

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Lighting can be broken down into three main categories: ambient, ____, and accent.

A. functional B. task C. work D. specific

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