Which of the following valves has the highest pressure drop?

A) Gate valve.
B) Wafer valve.
C) Ball valve.
D) Globe valve.


D) Globe valve.

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____ is a branch of philosophy that considers how to apply concepts of right or wrong.

A. Science B. Technology C. Sustainability D. Ethics

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The 1990 CAA is an example of performance-based pollution control

Indicate whether the statement is true or false

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During normal engine operation if a DPF does not get hot enough to burn off the collected soot inside of it, it will need to:

a. perform an active regeneration b. perform a passive regeneration c. perform a reverse flow regeneration d. be removed for thorough cleaning

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The _____ is a variation of the fixed-price and cost-plus contract.