The differences in the temperature of the fluid carried and the surrounding air causes _____ in a pipeline.

a. freezing of the line
b. linear expansion
c. overheating of the line
d. contraction


b. linear expansion

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When an oxygen cylinder is exposed to fire, what device is used to reduce the possibility of an explosion?

A. rupture disc B. fusible plug C. flashback arrester D. backfire arrester

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Alligator gar is the only gar found in North America with a snout twice the length of its head

a. True b. False Indicate whether the statement is true or false

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What system on a hybrid vehicle recovers the energy used to brake by converting rotational energy into electrical energy?

What will be an ideal response?

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Two technicians are discussing a diagnostic procedure where a tire and wheel is spun freely with the vehicle on a hoist. Technician A says that if the treads appear to move inward and outward the tire should be balanced. Technician B says that if the treads move inward and outward the tire is defective and should be replaced. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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