悬吊下降系统是由工作绳、下降器、链接器和（）组成。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id < 2164534 and id<>'2164534' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25759' and id > 2164534 and id<>'2164534' order by id asc limit 5