试卷相关题目
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69506' and id < 4502696 and id<>'4502696' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69506' and id > 4502696 and id<>'4502696' order by id asc limit 5
中表述正确的是( )。

为正弦量在t=0时刻的相位
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