Is in front of two major books, respectively, members of the query, add and remove, especially the book should feature a little more, you can check the current situation of borrowing books.

前面两项主要是可以分别进行书籍，会员的查询，增加和删除，特别是图书的功能更应该多一些，可以查询现有图书的借阅情况。帮助一项主要是关于版本的设置。

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