发电机解列停机后，应确认（）、（）及（）均已断开后，拉开主变压器高压侧出口隔离开关，发电机改为冷备用。
参考答案：出口断路器；灭磁开关；高压厂用变压器断路器
. 若直线x－2y＋5＝0与直线2x＋my－6＝0互相垂直，则实数m＝______.
While the project is being completed, management requests a change. What is the FIRST thing the project manager should do
A) Comply with the request if possible.B) Obtain a complete understanding of the scope of the change.C) Teel the customer that a change will be coming.D) Ask the team to accept the change.
