若功率方向继电器的内角为30度，则短路阻抗角为45度时该继电器不动作。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id < 4491295 and id<>'4491295' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69376' and id > 4491295 and id<>'4491295' order by id asc limit 5