I cannot answer the question "pressure how many doors" directly because it's grammatically incomplete and lacks context. The phrase doesn't make logical sense without further information. To help me understand your question, please provide more details. For example, are you asking:
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About the pressure exerted on a door? This could relate to air pressure, water pressure, or the force applied to a door to open or close it. In this case, the number of doors is irrelevant. The pressure on one door would be the relevant factor. To answer, I'd need to know the type of pressure and its magnitude.
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About how many doors can withstand a certain pressure? This would depend heavily on the type of door, its construction, and the type of pressure. A steel door will withstand far more pressure than a wooden one.
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About a situation involving multiple doors and pressure? Perhaps you have a specific scenario in mind, like a building under pressure from an explosion or flood. Please describe the situation.
Please rephrase your question with more context so I can provide a helpful and accurate answer.
