下列施工机械折旧方法中，年折旧率为固定值的是（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27080' and id < 2244799 and id<>'2244799' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27080' and id > 2244799 and id<>'2244799' order by id asc limit 5