单选题
1分
Provision must be made in pipe systems for changes in length due to change of temperature. The bold ...
Provision must be made in pipe systems for changes in length due to change of temperature. The bold and italic word “provision'' probably means
参考答案: C
参考解析: 管系中必须安装膨胀接头,以适应由于温度的变化而使管系长度发生的变化