What is the purpose of a differential?

A) To change the direction of engine torque
B) To allow the drive wheels to rotate at different speeds
C) Both A and B
D) Neither A nor B


C

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?Which of the following are recommended additions when installing a high lift cam?

A. ?Bronze valve guides B. ?Rocker arms with roller tips C. ?Higher tension valve springs D. All of the above E. ?None of the above

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Which domestic engine manufacturers of onhighway commercial diesel engines are using single-actuator EUIs after the EPA 2007 model year?

A. DDC only B. Volvo-Mack only C. Caterpillar only D. None

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Managerial ethics refers to the ethics that an organization specifies for a person performing

in a managerial role.

Indicate whether the statement is true or false.

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A wide band oxygen sensor is capable of detecting the air-fuel mixture in the exhaust from ________ (rich) to ________ (lean)

A) 8:1 to 18:1 B) 10:1 to 23:1 C) 13:1 to 16.7:1 D) 12:1 to 15:1

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