以下为句子列表：
英文: Fire Protection System Installations: The National Fire Protection Agency (NFPA) Guidelines require a confirming flow test be conducted by a certified tester whenever a main linevalve is installed, such as a shut-off valve or a backflow preventer.
中文: 消防系统安装：美国全国消防局（NFPA）指导方针要求在安装“主管道”阀门时要由有资格证书的检验员对关闭阀或防回流阀进行流量检测。
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英文: Install a shut-off valve in the cold water inlet line.
中文: 在冷水进水管处安装一个关闭阀。
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