丙烯制冷压缩机工艺系统开工引液线与高压脱丙烷塔相连。。
参考答案：错
解析：开工引液线与低压脱丙烷塔相连。
根据句意及首字母提示，完成下列单词拼写。
1. Sorry, I'm new here. I don't k________ your name.
2. Is that your a________ clock?
3. I can see a map on the w________.
4. Please b________ the bag to me.
5. They play s________ every day.
硝酸银和硝酸铜的混合溶液中，加入一定量的铁粉，充分反应后有少量金属析出，过滤后往滤液中滴加盐酸，有白色沉淀生成．则析出的少量金属是
A．Cu和Ag
B．Fe和Cu
C．Cu
D．Ag
