The scale and corrosion in steam systems is removed by _____.

a. filters
b. colanders
c. strainers
d. differential pressure


c. strainers

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An active VT schedule can reduce the finished weld rejection rate by more than ____ because defects are identified and corrections can be made.? ?  

A. 75%? B. 80%? C. 85%? D. 90%?

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____________________ steels contain specified larger proportions of alloying elements.

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

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The most dangerous fuel gas, due to its ability to ignite in low concentrations with air, is _____

a. argon b. helium c. propane d. acetylene

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The resistance of a medium is measured in ________

Fill in the blank(s) with correct word

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