行政限制的范围有那些?
抢筑围井时,先清除拟修井范围内的杂物,并挖除()层厚约0.2m。 ["黏土","两合土","软泥","壤土"]
+24V系统直流电源电压变动范围:() ["-40V∽-57V;","-44V∽-57V;","23V∽-29V;","19V∽-29V;"]
BTS3812在3×1配置方式下,其最大功耗是:() ["A、≤1276W","B、≤1776W","C、≤2177W","D、≤2377W"]
组成一个24v系统至少需要()只电池单体。 ["12","18","24","30"]
产籍异动变更的第一要素是那些?