根据英文解释或汉语意思完成单词。每个单词的首字母已给出。(每小题1分,共5分) 1.He is so careful that he always makes few m____________. 2. He used to be shy, but now he is very o . 3. She used to had short hair, but now she has l hair. 4. If you want to make lots of (friend),you must be (friend) to others. 5. It’s difficult for me to r (记住) so many English words.
氢氧化钾是重要的工业产品。请回答: (1)铝与氢氧化钾溶液反应的离子方程式是 。 (2)工业品氢氧化钾的溶液中含有某些含氧酸根杂质,可用离子交换膜法电解提纯。电解槽内装有阳离子交换膜(只允许阳离子通过),其工作原理如图所示。 ①该电解槽的阳极反应式是 。 ②通电开始后,阴极附近溶液pH会增大,请简述原因: 。 ③除去杂质后的氢氧化钾溶液从液体出口 (填写“A”或“B”)导出。