电缆线芯外面有(),使其安全运行并避免人身触电。 A.支柱绝缘子 B.绝缘层和保护层

题型:单项选择题

问题:

电缆线芯外面有(),使其安全运行并避免人身触电。

A.支柱绝缘子

B.绝缘层和保护层

C.绝缘套管

考点:电工进网证考试电工进网证(特种电缆)电工进网证(特种电缆)题库
题型:单项选择题

读短文,根据短文内容选择正确答案。

      Mike comes from America. He is twelve. His father Mr. Brown works in a big shop in Beijing. Mike has a

sister. Her name is Kate. She is only four.

      It is Saturday today. Mike's family is at home. Mr. Brown is sitting in a chair and reading today's newspaper.

Mrs. Brown is out of the house, and she is watering the flowers. Is Mike with his mother? No, he is cleaning his

new bike. Where is Kate? She is in her room. She is playing with her cat. What a happy family!

1. Mr. Brown works ______________.

A. in America

B. in a bank

C. in Beijing

D. at home

2. Who is Kate?  She is ______________. 

A. only four

B. Mike's sister

C. playing

D. at home

3. Mrs. Brown is ______________.

A. in the house

B. cleaning her new bike

C. sitting in a chair

D. watering the flowers

4. Mike is ______________.

A. cleaning his new bike

B. with his mother

C. in his room

D. sitting in a chair

5. Kate is playing with ______________.

A. Mike

B. Mr. Brown

C. Mrs. Brown

D. her cat

题型:单项选择题

如图甲所示为小明用电流表测灯泡L1与L2并联电路中通过灯泡L1电流的电路,应将导线接头M接电流表的     (选填“-” 或“0.6”)接线柱,此时电流表的示数如图乙所示,则通过灯泡L1中的电流为      A。(2分)

题型:单项选择题

男性,28岁。农民,10月30日高热、头痛、腰痛、呕吐、腹泻,连续发热4天,鼻出血1次。用扑热息痛后热退,但出现头晕、尿少、排尿痛。血象:白细胞数18×109/L,中性粒细胞60%,形态不正常的单核细胞12%,淋巴细胞23%,血小板50×109/L,尿中有膜状物。

经上述治疗后小便量仍在100ml/24h左右,应采取下列何种治疗措施 ()

A.腹膜透析

B.血液透析

C.加大口服导泻剂量

D.加大速尿剂量

E.减少每日补液量

题型:单项选择题

如果在实验室观察单细胞生物,你认为正确的方法是 [ ]

A.用放大镜观察

B.用电子显微镜观察

C.用肉眼观察

D.用普通显微镜观察

题型:单项选择题

被调查者自行填写问卷的缺点是()

A.成本比较高

B.匿名性比较差

C.调查者缺乏对调查过程的直接控制

D.需要动员很多调查员来进行调查

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