问题详情

如图所示,梁处于平衡,自重不计,接触处是光滑的,图中所画受力图是    。


A、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt"><span style="mso-spacerun: yes"></span></span><span style="LETTER-SPACING: 0.2pt; FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: ">正确</span><span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt"></span>

B、<span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt" lang="EN-US"><em><span style="mso-spacerun: yes"></span>B</em></span><span style="LETTER-SPACING: 0.2pt; FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: ">处约束力不正确</span><span style="FONT-FAMILY: ; FONT-SIZE: 10.5pt"></span>

C、<span style="LETTER-SPACING: 0.2pt; FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: ">不能确定</span>

时间:2021-07-17 20:17 关键词:

答案解析

B