.下列选项中，不属于单母线接线优点的是(   )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id < 4503897 and id<>'4503897' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id > 4503897 and id<>'4503897' order by id asc limit 5