一般电力变压器激磁电流的标么值大约是() A.0.5~0.8 B.0.02~0.1

题型:单项选择题

问题:

一般电力变压器激磁电流的标么值大约是()

A.0.5~0.8

B.0.02~0.1

C.0.4~0.6

D.0.5~0.8

考点:火电电力职业技能鉴定考试变压器检修工(中级)变压器检修工(中级)题库
题型:单项选择题

阅读理解。

     Tom is a lovely schoolboy. He likes playing football very much. He often comes back home between

4:00 p.m. and 5:00 p.m. But today he comes back home late, so his mother says, "You come back home

late today, Tom."

     "Yes, we have got a new teacher. He teaches us math." Tom answers. "How is he?" his mother asks.

"I don't know. I don't think I can believe (相信) him."

     "How is that?" his mother says.

     "One moment he says two and three is five. But the next moment he says one and four is five."

Tom answers.

      "Tom, you are so silly (傻的)." His mother says, "Two and three is five, but one and four is four."

1. Tom comes home _____ today.  [ ]

A. at 4:00 p.m.

B. at 4:30 p.m.

C. at 5:00 p.m.

D. after 5:00 p.m.

2. Why does Tom come back home late? Because _____. [ ]

A. he plays football

B. he plays basketball

C. he studies math

D. they have got a new teacher today

3. The sentence "How is that?" means "_____" [ ]

A. How can you say that?

B. Your teacher is right.

C. Tell me more about it.

D. How do you feel?

4. Who is right? [ ]

A. Tom.

B. Teacher.

C. None.

D. Mother.

5. What do you think of Tom's mother?[ ]

A. She is lovely.

B. She is clever.

C. She is silly.

D. She is kind.

题型:单项选择题

下列有关实验现象的描述正确的是(  )

A.乙炔燃烧时火焰明亮并伴有黑烟

B.在苯和甲苯中分别滴加几滴高锰酸钾酸性溶液振荡,高锰酸钾酸性溶液均褪色

C.在乙醇中加入黄豆粒大小的金属钠,钠浮在液面上,熔化成光亮的小球,反应剧烈而迅速消失

D.在溴乙烷和氢氧化钠溶液共热后的溶液中,加几滴硝酸银溶液产生淡黄色沉淀

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踢足球时,二人对脚,可使小腿于外展外旋位受伤,一般最易伤及()

A.膝外侧副韧带

B.膝内侧副韧带

C.半月板(双侧)

D.髌韧带

E.骨折

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加强农村社会建设与管理,优化农村生态环境()

A、加强耕地质量保护

B、加强资源环境保护

C、全面防治养殖污染

D、全面防治土壤污染

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静脉输液治疗的护理目标()、()、()。

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