Why does the company make these changes? Because of _________ . At what temperature does the central heating system keep?

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问题 Why does the company make these changes?
Because of _________ .

At what temperature does the central heating system keep?

选项

答案19℃

解析 第四段指出空调只能在从10月1日到次年4月30日期间开放,并且温度保持在19摄氏度。
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