题目内容
接入PMU装置的直流信号通常为( )。
2021-12-12
A.4〜20mA
B.0〜5V
C.100V
D.110V
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SQL Error: select id,body,options from ***_enewstiku where sourceid='29467' and id < 2399017 and id<>'2399017' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29467' and id > 2399017 and id<>'2399017' order by id asc limit 5