现阶段变电所综合自动化系统中的分散分布式结构模式在高压变电所应用更为合适;分散式结构集中式组屏模式在中低压变电所应用最多。
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧