Which of the following describes how an exhaust gas, opacity meter functions?

A. mass particle oscillator
B. smoke color comparator
C. light extinction measurement
D. exhaust gas chemical analysis


Answer: C

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When lightning or thunder is present _____.

a. lifting and rigging operations should be halted immediately b. lifting and rigging can proceed until radar indicates that lightning strikes are within 1 mile c. lifting and rigging can proceed until radar indicates that lightning strikes are within 3 miles d. lifting and rigging can proceed until radar indicates that lightning strikes are within 7 miles

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The basic visual inspection process requires tools to measure the joint _____ before the weld is produced.? ?  

A. geometry? B. bend? C. length? D. width?

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Explain the effect of Heat Islands

What will be an ideal response?

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What is an odorant commonly used in natural gas called?

What will be an ideal response?

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