Questions
本-(2025-2026-1)-SI1210-01-工程实践 理论测验
Single choice
表面粗糙度代号标注中，用____参数时可不注明参数代号
Options
A.Ra
B.1
C.Rz
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Step-by-Step Analysis
此题考察的是表面粗糙度代号标注的规范用法。
选项1：Ra。这个选项是正确的，因为在常见的表面粗糙度标注中，当使用平均粗糙度参数 R......Login to view full explanationLog in for full answers
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