两相短路时应采用什么电压实现距离测量?A、相对地电压 B、相间电压 C、相对地或相间

题型:单项选择题

问题:

两相短路时应采用什么电压实现距离测量?

A、相对地电压

B、相间电压

C、相对地或相间电压

考点:继电保护工考试继电保护工考试题库
题型:单项选择题

(2011年湖南衡阳,5题)学习化学观察尤为重要。下面对一些实验的现象描述不正确的是(  )

A.硫在空气中燃烧发出明亮的蓝紫色火焰,生成一种有刺激性气味的气体

B.细铁丝在氧气中燃烧火星四射,生成黑色固体,放出大量的热

C.打开浓盐酸的瓶盖,在瓶口上方出现白雾

D.在碳酸钠溶液中滴加紫色石蕊试液,紫色石蕊试液变成蓝色

题型:单项选择题

A traveller was staying in an Egyptian village. One day, she held up her camera to take pictures of the children. Suddenly the young ones began to shout at her. The traveller's face turned red and she apologized to the head for what she was doing, and told him she had forgotten that people in some places believed a person would lose his soul if his picture was taken. She explained to him the operation of a camera for a long time. Several times the head tried to say something, but he couldn't. When she believed that the head didn't fear any longer, the traveller then let him speak. With a smile, he said, "The children were trying to tell you that you forgot to take off the lens(镜头) cap!"  

1. The children shouted when the traveller was taking pictures of them because _______.

A. they didn't want to stop playing                 

B. the traveller forgot to take off the cap on her head

C. they didn't want to have their pictures taken 

D. the traveller was not doing well with her camera

2. The traveller made an apology to the head because _______.

A. she thought it was not right to take people's pictures without telling them beforehand.

B. the children would lose their souls   

C. she had stayed in the village too long

D. she didn't take a picture of the head first

3. When the head smiled, it's clear that _______ .

A. the children wanted to play with her                       

B. the traveller didn't know what the children meant

C. he wanted the traveller to tell him something else

D. the traveller didn't let him speak

4. Which of the following is NOT right?

A. The traveller knew something about people in some countries.

B. The children wouldn't mind if the traveller took pictures of them.

C. The head was afraid that the traveller's camera would hurt the children.

D. The traveller didn't understand why the children shouted.

题型:单项选择题

某重大疾病保险包含的死亡和重大疾病责任是完全独立的,各自的保额为单一保额,且数额一致。这样的重大疾病保险所属的类型是()。

A.提前给付型

B.独立主险型

C.附加给付型

D.回购式选择型

题型:单项选择题

中央政治局每半年召开民主生活会。

题型:单项选择题

催化重整化学反应中的吸热反应是()

A、加氢裂化反应

B、异构化反应

C、脱氢反应

更多题库