变压器调压分接头从高压侧抽头的原因有()。
A、变压器高压线圈套在低压的外面;
B、高压侧电流小一些;
C、变压器低压线圈套在高压的外面;
D、高压侧电流大一些。
参考答案:A, B
补全对话。
A:Hi,Wang Tao. 1 are you today?
B:I'm 2 .Thanks._ 3 about you?
A:I'm not bad.What 4 is it today?
B:It's Friday.
A:Friday? It must 5 _May 12.
B:Yes.But 6 are you so happy?
A:Tomorrow is my mother's birthday.
B:Really?Will you 7 a party?
A:Yes.Would you like to come?
B:_ 8 ,I will. 9 will it begin?
A:At half past eight.
B:OK.I'll be there 10 time.
1._______ 2._______ 3.________ 4.________ 5.________
6._______ 7.________ 8.________ 9.________ 10.________
混凝土的浇筑厚度,应根据拌和能力、()、浇筑速度、气温及振捣器的性能等因素确定。
A.工人人数
B.仓号大小
C.混凝土标号
D.运输距离