已知为作用在刚体上的平面汇交力系,其矢量关系如图1-2所示,由此可知( )。

A、该力系的主矢<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/uploadFile/photo/fdce88f76c794b7784764de27b68ce35.png" alt="上传图片">

B、该力系的合力<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/uploadFile/photo/412552e63d37413aa868a894371bc6a7.png" alt="上传图片">

C、<span style="font-size:12.0pt;font-family:仿宋_GB2312; mso-hansi-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;; mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">该力系的合力<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/uploadFile/photo/afe8aa90e7d740d19deb73f40f2aa3b3.png" alt="上传图片"></span>

D、<span style="font-size:12.0pt;font-family:仿宋_GB2312; mso-hansi-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;; mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">该力系平衡</span>