电力系统三相交流线路非全相运行的情况中,单相断线与()短路故障的复合序网类似。 A. 发布时间:2018-02-05 22:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 电力系统三相交流线路非全相运行的情况中,单相断线与()短路故障的复合序网类似。A.单相短路B.两相短路C.两相短路接地D.三相短路
题型:单项选择题 While managing the separation anxiety during hospitalization for a two-year-old boy, which of the following suggestions would be most helpful to the parentsA. Tell the child the time they are leaving and returning.B. Bring the child’s favorite toys from home.C. Leave while the child is sleeping.D. Keep the visit time short. 查看答案
题型:单项选择题 在一幅地图上,用40厘米的长度表示实际距离180千米,这幅地图的比例尺是______.在这幅地图上,量得甲、乙两地之间的距离是5.6厘米.甲、乙两地之间的实际距离是______千米. 查看答案