救援通道每隔200m应设图象文字标记。

阅读理解。

     Many people like to read the Guinness Book of World Records (《吉尼斯世界纪录大全》), and some

people want to be in it! How do people get their names in the book? They do something new and different,

such as (比如) making the world's largest cake with more than 54,000 eggs.

     For many people, it is fun to make world records. It' s exciting. But who eats the cake?

     While some people are making world records, others don' t have much food to eat. Hunger is a very

serious (严重的) problem in many places. How many old people do not have enough money to buy good?

How many children go to bed without dinner? The answer is too many

1. How do people get their names in the Guinness Book of Word Records?

A. They do something new and interesting.

B. They do something new and different.

C. They only have a large cake.

D. They only make a large cake.

2. How many eggs are there in the world's largest cake?

A. 54,000

B. More than 54,000

C. Less than 54,000

D. We don't know.

3. What' s Chinese meaning of the word "problem"?

A. 粮食

B. 人

C. 问题

D. 纪录

4. Are there any children going to bed without dinner in the world?

A. Yes, there aren't.

B. Yes.

C. NO.

D. Yes, there're 54,000.

5. What should we do when some poor people don't have any food?

A. We do nothing.

B. We can make world records.

C. We can give  them some food.

D. We are poor, too.

一台电动机正常工作时的电压为380V，电流为10A，电动机线圈电阻为2Ω，则它的额定功率为______W，机械功率为______W，正常工作1min产生的热量为______J．

纤维介质损耗

一般要求配料时的木材含水率越低越好，表明材质干燥，制作家具质量较好，不容易变形。

下列关于电气的交接试验注意事项说法中，正确的是（）。

A、在高压试验设备和高电压引线周围，应装设遮拦并悬挂警示牌

B、不设防护栅时，最小安全距离为0.7m

C、凡吸收比大于1.2的电动机，都应先干燥后再进行交流耐压试验

D、制造厂装配的成套设备应连接一起进行绝缘试验

E、断路器的交流耐压试验做分、合闸状态一种即可