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问答题
2、 The word ( ) itself usually refers to the deterioration of metals and ceramics, while similar phenomena inplastics generally called ( ) A. recrystallization.... corrosion B. recrystallization...deg
答案：
答案：B 解析： 选项中的 "recrystallization" 指的是再结晶，这是一种材料科学中的过程，通常...
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问答题
Before two components are assembled together, the relationship between the dimensions of the mating1.surfaces()A. must be giving outB. should printed clearlyc. must be specifiedD. should be clearl
答案：
答案：C 解析： 两个组件在组装之前，配合表面的尺寸关系必须被明确指定。因此，正确的选项是C. must be ...
