The use of electronic devices to reduce sound transmission is known as:

A) Active noise reduction
B) Impulsive noise reduction
C) Noise-induced reduction
D) None of the above


A) Active noise reduction

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Southerners feared the Tariff of 1828 because

A. it would hurt their growing manufacturing sector. B. this same use of the power of the federal government could be used to suppress slavery. C. it might hurt Andrew Jackson's political career. D. they were convinced that it would destroy the American woolen industry. E. it could damage the chances of the American System's success.

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Experts predict that the worlds population will exceed 10 billion people by 2025

Indicate whether the statement is true or false

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Which of the following correctly describes the function of an automatic slack adjuster?

A. converts linear force to torque B. acts as a lever to increase mechanical advantage C. resets brake free stroke as friction linings wear D. all of the above

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The sensor that most determines fuel delivery when a fuel injected engine is first started is the ________

A) ECT sensor B) IAT sensor C) Engine MAP sensor D) O2S

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