合理选择切削液,可减小塑性变形和刀具与工件间摩擦,使切削力()。
A.减小
B.增大
C.不变
D.增大或减小
参考答案:A
假如你是中学生华华。你在一个叫“家长一百”的家长论坛上看到如下内容。请你写一篇英语文章回复这位家长。
I'm the mother of a Senior 3 student. I want to send my child to study abroad. I believe that studying abroad will help him to better learn a foreign language, be independent and have a good future. But he is very upset and wants to study at home. We quarrel about this every day. Am I wrong?
写作要点:1.表明自己的看法;
2.举例说明以陈述自己的理由;
3.提出至少两条建议。
注意:1. 词数不少于120词;
2. 文中不得出现自己所在学校的名称和班级同学的姓名。
两岸交流的主要内容是?