重合闸启动条件?
参考答案:
1)、保护启动;
2)、断路器位置不对应启动。
I travel to the Binhai New Area by light railway every day, _____ do many businessmen who live in downtown Tianjin.
A.as
B.which
C.when
D.though
互相拮抗而削弱原有功效的配伍是()
A.相须
B.相使
C.相畏
D.相恶