为下列工具正确选材:高精度丝锥____ ;热锻模____ ;冷冲模____ ;医用手术刀片____ ;麻花钻头____ 。( ) -题库考试答案搜索网

为下列工具正确选材:高精度丝锥 ;热锻模 ;冷冲模 ;医用手术刀片 ;麻花钻头。( )

单选题

2021-09-01 19:28

A、Cr12MoV、CrWMn、5CrNiMo、68Cr17、W18Cr4V;
B、CrWMn、5CrNiMo、Cr12MoV、68Cr17、W18Cr4V;
C、W18Cr4V、Cr12MoV、CrWMn、5CrNiMo、68Cr17。

查看答案

正确答案

B

试题解析

标签：青书学堂河北建筑工程学院金属工艺学（高起专）

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