环式碎煤机应如何更换锤环？

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问题问答题简答题

环式碎煤机应如何更换锤环？

答案

参考答案：

当锤环磨损过大，破碎效率变低时，即应更换锤环。新更换锤环的安装排列均应保证每对相对应的锤平衡，允许误差为0.17kg。

改错题

短文改错

文中共有10处错误，每句至多有2处错误。

增加：在此处加一个漏字符号(∧)，并在其下面写出修改的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在其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（从十一处起）不计分。

Jane was just a girl in my class. I never knew much about her except for that she was strong. She

didn't talk many. Her hair was black and purple, and she worn black sports shoes and a black sweater,

even on summer. She was, in fact, rather attractively. She never seemed care what the rest of us thought

about her, like the rest of my classmate. I didn't really want to get closest to her. It was only when we did

their chemistry project together that I begin to understand why Jane dressed the way she did.

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