抽水蓄能机组在发电工况下运行时，有功功率是可调的；机组在抽水_爱下问搜题

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问题判断题

抽水蓄能机组在发电工况下运行时，有功功率是可调的；机组在抽水工况运行时，吸收的有功功率大小根据当时的水头和频率由调速器自动进行调整（）

答案

参考答案：对

阅读理解

阅读理解。

Every August, Edinburgh, the capital of Scotland, is the home of one of the most important arts festivals in the world. Three of our young readers went there and told us about it.

My parents have always liked art exhibitions and they’ve taken me to many, but I
never enjoyed them, however, in Edinburgh we saw an exhibition of African masks
at a museum and they were fantastic. I couldn’t imagine that people made such
beautiful things so long ago. Some of the masks were 2,000 years old.
Marti, 14

My friend and I went to the theatre at the Edinburgh Arts Festival. We decided to see a
musical(音乐剧). I used to think musicals were for people like my mum, but it was very
good. I loved all the singing and dancing. Everyone was very talented and it was really
colorful.
Jack, 13

I’d never been to a ballet before and I didn’t really want to go, but my aunt Celia said I had to. In the end, I was glad! We saw The sleeping Beauty at the Edinburgh Festival. The dancers were beautiful and Tchaikovsky’s music made the story come alive.I can’t wait to go to a ballet again.
Hannah, 16

1.This passage is most probably from ____________.

A. a local newspaper
B. a TV guide
C. a festival leaflet
D. a sports magazine

2.Who went to the arts festival alone?

A. Marti
B. Jack
C. Hannah
D. None of them

3.What similar characteristic do the three teenagers share?

A.They all expected that they would have a great time before they went.
B.They all thought the festival would be rather boring before they went.
C.They were all music lovers and enjoyed singing and dancing a lot.
D.They were all under 18 so they had to go to the festival with adults.

单项选择题

标准化成就测验是指由专家或学者们所编制的适用于大规模范围内评定个体（）的测验。

A.成就水平

B.能力形成

C.结构

D.智力发展