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单选题
645 用于存储和输送新鲜饮用水的系统部分。如果饮用水也用于洗涤,则包括洗涤水系统。
A
part of a system for the preservation and delivery of fresh drinking water.If potable water is also used for flushing, a flushing system is installed.
B
That portion of the system which is used to store and deliver fresh drinking water. Includes wash water system if the potable water is also used for washing.
C
The part of a system used to store and convey potable water in a tank.If potable water is also used for flushing, a flushing system is included.
答案解析
正确答案：B
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