影响变压器励磁涌流的主要原因有：①变压器剩磁的存在；②电压合闸角。
参考答案：对
用适当的话语补全下面对话，使句子完整。
A: Hi, Betty. Do you have time on Sunday afternoon?
B: __1__.Why ?
A: I want to have a party on Sunday afternoon.
B: A party? __2__?
A: Oh, a birthday party. Sunday is my 14th birthday. Can you come?
B: Sure (当然). __3__?
A: At my home.
B: __4__？
A: It starts at 4:00.
B: OK, I'll buy a gift (礼物) for you.
A: __5__.
悬垂线夹安装后，绝缘子串应符合哪些要求？
