配电变压器的分接开关位于Ⅱ档,运行中电压长时间偏高时,应采取的措施是()。A、将分接

题型:单项选择题

问题:

配电变压器的分接开关位于Ⅱ档,运行中电压长时间偏高时,应采取的措施是()。

A、将分接开关切换到Ⅲ挡

B、将分接开关切换到Ⅰ挡

C、减少负荷

D、要求供电部门提高电压

考点:高压电工考试高压电工考试题库
题型:单项选择题

肺门阴影的主要组成部分是()
肺纹理的主要组成部分是()

A.肺动脉

B.肺静脉

C.肺动脉和肺静脉分支

D.肺动脉、肺静脉和支气管

E.肺动脉、支气管、淋巴管及神经

题型:单项选择题

在下列图形中,为中心对称图形的是(  )

A.等腰梯形

B.平行四边形

C.正五边形

D.等腰三角形

题型:单项选择题

“六一”儿童节前,全市的小学生代表用棱长3cm的正方体塑料拼插积木在广场中搭起了一面长6m,高2.7m,厚6cm的奥运心愿墙,算一算这面墙共用了多少块积木?

题型:单项选择题

情景对话(共5小题,每小题1分,满分5分)

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Jane: Oh, that's Mr. Taylor. He is so boring.

Mother: What do you mean?

Jane:    6   And he's so quick tempered, mum.

Mother:   7  Are you sure, darling?

Jane: Yes, he gets angry very quickly.

Mother :   8 

Jane: And do you know, he spends all his time looking at his reflection in the window, admiring himself.

Mother : Really?  9  

Jane: Because he is vain, that's why! And conceited (自负的). He thinks he knows everything.

Mother: Oh, Jane. Be reasonable. I'm sure you're exaggerating (夸张), Mr. Taylor seems such a nice and kind man.

Jane:   10   He's mean (小气的) and cruel.

Mother: Cruel? Now how can a history teacher be cruel?

Jane: Because he only gave me two out of ten marks in my history test.

Mother: Oh, now I understand, Jane. I think you'd better get on with your homework.

A.Well, he isn't.

B.And why does he do it ?

C.His lessons send me to sleep.

D.That's doesn't sound like Mr. Taylor at all.E. Quick tempered? Mr. Taylor ?

F. Yes, he does.

G. He doesn’t like me.

题型:单项选择题

提出“经济人”假设管理管论的主要代表是()。

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