A type of fitting used to prevent damage to PVC caused by temperature changes is a(n) _____.

a. combination coupling
b. flex connector
c. hinged coupling
d. expansion coupling


d. expansion coupling

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Which of the following engine OEMs uses the HEUI fuel management system on post-2010 highway diesel engines?

A. Caterpillar B. Navistar C. Paccar D. Cummins

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? Identify and state the historical significance of the Works Progress Administration.

What will be an ideal response?

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What percent of opacity means that the exhaust is so dark that it completely blocks light from a beam projected through the exhaust smoke?

A) 25% B) 100% C) 50% D) 0%

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Technician A says that Intelli-check is best used as a first-level diagnostic tool. Technician B says that if Intelli-check illuminates one of the four failure indicator LEDs, it would be good practice to have a technician skilled in electrical systems to check the system before replacing components. Who is correct?

A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B

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