X线治疗机治疗时，遮住保护正常组织100kV以下的需要铅橡皮的铅当量为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29411' and id < 2394855 and id<>'2394855' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29411' and id > 2394855 and id<>'2394855' order by id asc limit 5