功率方向继电器的内角是由其内部结构决定的。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69392' and id < 4491963 and id<>'4491963' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69392' and id > 4491963 and id<>'4491963' order by id asc limit 5