What is the function of the rack and control sleeves in port-helix PLN systems?

A. To rotate the plungers in unison.
B. To hold plungers in place when fuel pressure is removed.
C. To rotate the plungers individually.
D. To hold the plungers in a static position.


Answer: A

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Fill in the blank(s) with correct word

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To secure passage of the Underwood Tariff Bill, President Woodrow Wilson broke new ground by

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