问题
多项选择题
防止给水管道腐蚀的方法有()。
A、采用非金属管
B、根据土壤和地下水性质,金属管外采取涂保护层防腐
C、除锈措施
D、金属管内壁喷涂涂料、水泥砂浆等
答案
参考答案:A, B, D
防止给水管道腐蚀的方法有()。
A、采用非金属管
B、根据土壤和地下水性质,金属管外采取涂保护层防腐
C、除锈措施
D、金属管内壁喷涂涂料、水泥砂浆等
参考答案:A, B, D
A: Hello! May I speak to Sue, please? B: 1 . A: Oh, this is Jim speaking. Is that Mrs. Green? B: 2 . A: Mrs. Green, I have something to tell her. Can I leave a message(留口信)? B: 3 . A: Please tell her we are going to see our teachers tomorrow. B: 4 . A: We’ll meet at school at eight in the morning. B: 5 . A: No. That’s all. Thank you. B: You’re welcome.
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