简述通信调度管辖范围。
参考答案：通信调度管辖范围包括承载本级电网通信业务的通信网资源，以及受上级通信机构委托调度的通信资源。
—Have you handed in your school-work yet?
—Yes, I have. I guess it now.
A．has graded
B．is graded
C．is being graded
D．is grading
液力变矩器减少了设备的使用寿命。
