If a diesel engine is equipped with a diesel particulate filter (DPF) which of the following lube oil classifications must be used?

A. CJ-4
B. CI-4
C. CF-4
D. GF-4


Answer: A

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What reactor type is also called an autoclave reactor?

a. Stirred tank reactor b. Fixed bed reactor c. Tubular reactor d. Fluidized bed reactor

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After reviewing the construction plan for a job and realizing that contact with raw sewage may happen, an operator should be prepared by _____.

a. having a personal respirator available b. chewing gum to cover the odor of the sewage c. wearing latex or non-latex gloves if contacting sewage d. washing his or her hands before reporting to work

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Even with the correct refrigerant charge, a water cooled system would appear overcharged if:

A) It had lower than normal water flow through the condenser. B) The air filter was dirty. C) It had higher than normal water flow through the condenser. D) It had a restricted liquid line filter drier.

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Which one of the following statements about the response curve of a system is NOT true?

A) The length of the settling time must be reduced. B) Reduce the dead time C) Maximize the minimum value of error D) Reduce the steady-state error

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