S9系列10kV的电力变压器较以前系列变压器的工艺改进有（）。
A. 增加铁芯截面积
B. 高低压绕组均使用铜导线
C. 选用超薄型硅钢片
D. 加大导线截面
查看答案
委托作品的著作权归属可以由委托人和受托人通过合同约定。
A. 正确
B. 错误
户外35kV高压配电装置场所的行车通道上，车辆（包括装载物）外廓至无遮栏带电部分之间的安全距离为（）m。
A. 1.15
B. 1.10
C. 1.05
D. 1.00
Which benefit can be obtained by using the configuration management service component in the operate phase？ Select exactly 1 answer（s） from the following：（）。
A. reduced operating costs， due to a consistent framework for making necessary changes in an efficient and accountable manner
B. greater accuracy， completeness， and timeliness of network configuration information
C. notification provided to interested parties regarding problems that have been identified， and a system that scales with customer requirements
D. improved system service quality and fewer disruptio
微信支付 
支付宝支付