为了易于起振，正弦波振荡器一般要求丨乂户|>1，则输出波形的振幅(

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30217' and id < 2444244 and id<>'2444244' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30217' and id > 2444244 and id<>'2444244' order by id asc limit 5