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为什么极地科考站要用真空管道排污？
极地科考站使用真空管道排污主要是因为防止土壤和地下水污染、适应低温环境以及减少对极地生态的干扰。
1、防止土壤和地下水污染。极地生态环境脆弱，真空管道可以有效收集和输送污水，避免污水渗入土壤和地下水，保护当地生态环境。
2、适应低温环境。极地温度极低，真空管道的封闭系统可以防止管道冻结，确保排污系统在低温环境下稳定运行，避免因结冰导致的管道破裂和污水泄漏。
3、减少对极地生态的干扰。真空管道埋于地下，减少了地表设施的建设，降低了人类活动对极地动植物的干扰，有助于保护极地生态系统的完整性和稳定性。
总结：极地科考站使用真空管道排污，是因为其防止土壤和地下水污染、适应低温环境以及减少对极地生态的干扰。
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