若发生低频振荡,可通过调整()来进行控制A、网络结构 B、发电机出力 C、地区电压

题型:单项选择题

问题:

若发生低频振荡,可通过调整()来进行控制

A、网络结构

B、发电机出力

C、地区电压

D、地区负荷

考点:电网调度运行人员考试电网调度自动化运行值班员高级技师电网调度自动化运行值班员高级技师题库
题型:单项选择题

It is John’s birthday today. He is five years old. He gets many birthday presents from his family and one of them is a nice big drum .

“Who gives him that drum?” his father asks.

“His grandfather,” answers John’s mother.

John likes his drum very much. He makes a terrible noise  with it, but his  mother doesn’t say anything about it. His father is not at home. He is working in a school. So he  doesn’t hear  the noise. But one of the neighbors does not like the noise. So one morning she takes a knife and goes into John’s room. John is making a noise with the drum. She says to him, “Hello, John. Do you know there is something very nice in your drum? Here’s a knife. Open the drum and you can  find it.” “OK.”

小题1:How old is John?

A.5

B.4

C.15

D.2小题2:Who gives John the drum as his birthday present?

A.His father.

B.His neighbour.

C.His mother.

D.His grandfather小题3:What present is John’s favourite?

A.The candy.

B.The present.

C.The drum.

D.The knife小题4:What’s John’s father’s job?

A.A doctor.

B.A worker.

C.A teacher.

D.A engineer小题5:Who opens the drum with the knife?

A.John’s father.

B.John’s neighbour.

C.John’s mother.

D.John

题型:单项选择题

中东有“五海三洲之地”之称,“五海”中实际有一个是内陆湖泊,它是[ ]

A、阿拉伯海

B、红海

C、黑海

D、里海

题型:单项选择题

个体自我意识的发展经历了从生理自我到社会自我,再到()

A.中心自我

B.体验自我

C.心理自我

D.生理自我

题型:单项选择题

井下职工每人每分钟共给风量不能少于()分钟。

A.4立方米 

B.5立方米 

C.3立方米

题型:单项选择题

对经检验检疫不合格的出境货物,不可申请重新报检。 ( )

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