A、近中<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0eaa4d44-348d-4257-8fe9-fd9a6712e077.jpg" width="13" height="16" /> 支托
B、远中<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0eaa4d44-348d-4257-8fe9-fd9a6712e077.jpg" width="13" height="16" /> 支托
C、远中邻面板
D、杆式卡环组
E、A+C+D
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