The fireseals refer to the seals mounted on or about the power package for the purpose of isolating areas subject to fire.

Fireseals are mounted on or about the power plant to separate the areas where a fire breaks out.

Fireseals are mounted on or below the power plant so as to isolate the engine when there is fire breaking out in the area.

Fireseals are mounted on or above the power package to in order to separate the firing areas.

正确答案：A

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