电源电压为1140V的隔爆插销装置应有()。 A.防止突然松脱的装置 B.电气联锁装

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问题:

电源电压为1140V的隔爆插销装置应有()。

A.防止突然松脱的装置

B.电气联锁装置

考点:综采维修电工综采维修电工(综合练习)综采维修电工(综合练习)题库
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阅读理解

     Kate's grandpa was very rich and had some shops. The old man began to learn drawing when he was sixty, and he

loved it very much. For twelve years he drew a lot and there were many pictures in his workroom. He was satisfied with

them and kept them well.One day the old man was ill.He had to be in hospital. Before he died, he said to Kate,"I want to give my pictures to a school as presents. Then the students will remember me forever. But I don't know which school . I'm going to give to. Can you help me?""Well," said the little girl."You'd better give them to a blind school."

1.Kate’s grandpa was         .

A. an owner of shops

B. a teacher

C. a farmer

D. a driver

2.The old man tried his best to be         .

A. an artist

B. a doctor

C. a teacher

D. a shop assistant

3.The old man loved          very much.

A. reading

B. writing

C. swimming

D. drawing

4.When the old man died, he was         .

A. sixty

B. seventy

C. seventy-two

D. seventy-three

5.Kate thought her grandpa’s pictures were         .

A. good

B. bad

C. beautiful

D. nice

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数据库设计中反映用户对数据要求的模式是( )。

A.内模式
B.概念模式
C.外模式
D.设计模式

题型:单项选择题

试述课的一般结构。

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报警控制器的检查要点是什么?

题型:单项选择题

某车上装用的轮胎,其中一条旧胎现余花纹的深度为4mm,此规格的轮胎行驶里程定额为60000km,新胎的花纹深度是16mm,求此旧胎的储备里程。

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