.所示电路中,IS1,IS2和US均为正值,且IS2>IS1,则供出功率的电源是( )。
发布时间:2025-12-02
A.电压源US
B.电流源IS2
C.电流源IS2和电压源US
D.无法判断
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69433' and id < 4496489 and id<>'4496489' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69433' and id > 4496489 and id<>'4496489' order by id asc limit 5
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