蒸馏法制备注射用水的蒸馏水机有哪些？有何特点？
题型：问答题
问题：
蒸馏法制备注射用水的蒸馏水机有哪些？有何特点？
题型：问答题
短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（ ）划掉。
修改：在错的词下画一横线，并在该次下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分。
After the final examination, my brother and I planned to give us a treat at a restaurant. While waited for our food, we emptied all our small changes from our wallets on the table and counted it out. Soon, our food arrived with note. It reads, “Your lunch has been paid for. Have a lovely meal!” It was a wonderful surprise as nothing like that had ever been happened to us. I remembered an old man sitting nearby. He should have thought we didn’t have enough money to the bill. We looked around to thank him, and he was not there. His kind meant so much to us.