问题 名词解释

韧性:

答案

参考答案:

韧性是指金属材料在冲击载荷作用下对破裂的抵抗能力

写句子

扩句和缩句。     

1.按要求扩写句子。     

(l)路上行驶汽车。(什么样的路?怎样行驶?什么样的汽车?)

                                                                                                                                                  

(2)小树摇晃。(在“摇晃”前后各添加修饰语) 

                                                                                                                                                 

2.缩写下面句子。     

(1)海边的沙地里种着一望无际的碧绿的西瓜。

                                                                                                                                                

(2)毛 * * 在群众一阵又一阵的掌声中宣读中央人民政府的公告。

                                                                                                                                              

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