椅面的支撑框架如图所示，其中腰型滑槽两端为半圆孔，孔心距为 L，滑槽和椅子后支撑脚的安装孔使用内六角螺栓连接，椅子脚的局部视图及尺寸如图所示，要实现椅面高度六档可调，腰型滑槽的长度 L最小应不小于 (_刷题宝

题干

椅面的支撑框架如图所示，其中腰型滑槽两端为半圆孔，孔心距为 L，滑槽和椅子后支撑脚的安装孔使用内六角螺栓连接，椅子脚的局部视图及尺寸如图所示，要实现椅面高度六档可调，腰型滑槽的长度 L最小应不小于 ( )

椅面结构

椅子支撑脚局部视图

A：200mm

B：150mm

C：300mm

D：350mm

上一题下一题 0.0难度选择题更新时间:2019-06-23 10:03:10

答案(点此获取答案解析）

A

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