问题 多项选择题

水文测验进行的主要工作有( )。

A.水位、流速、泥沙的观测和资料整编分析及报送

B.蒸发、水温、冰情、地下水位的观测和资料整编分析及报送

C.地下水动态观测

D.地下水区域的确定和地下水资源的评价

E.水文地质参数计算

答案

参考答案:A,B

解析: 水文测验工作内容有:水位、流速、泥沙、水下地形冲淤变化、蒸发、水温、冰情、地下水位等工作项目的观测和资料整编分析及报送,反映一个地区或流域或局部地段的水文要素,在时空上的变化规律,为水利水电建设项目的水资料评价、利用与保护开发规划设计和运行调度与管理提供水文分析资料,为建设期间防洪、抗险等提供情报。

阅读理解


You and your friends will have lots of fun with Rabbit Ears Walkie -Talkies. You can talk to someone who is in another room at your house or someone who is up to 180 feet away from you. You can take your walkie -talkie with you when you go camping or walking.
Rabbit Ears Walkie -Talkies are easy to use. This is what you do:
1. Push the ON button.
2. Hold the TALK button in and say something. If your friend has his/her walkie - talkie on, he/she will hear you.
If you want to talk for a long time, you can lock the TALK button. Just push the button in and up. When you finish talking, push the TALK button down.
3. When you finish talking, let go of the TALK button and listen. When your friend pushes the TALK button and says something, you will hear what your friend says through your walkie -talkie.
4. When you finish talking with your friend, push the ON button again to turn your walkie-talkie off.
REMEMBER
◆If you cannothear, push L (loud) to make it louder.
◆If it is too loud, push S (soft) to make it quieter.
小题1:What are Rabbit Ears Walkie -Talkies used for?
A.Talking with others.
B.Listening to music.
C.Giving directions.
D.Locating places.
小题2:How can you lock the TALK button?
A.Keep the button on.
B.Hold the button back.
C.Push the button in and up.
D.Turn the button off and down.
小题3:Which button will you push when you can't hear clearly?
A.S
B.L
C.TALK
D.ON
小题4:The author writes this passage to _____.
A.tell how to make Rabbit Ears Walkie -Talkies
B.show how to use Rabbit Ears Walkie -Talkies
C.explain to the readers his camping experience
D.introduce some special ways to make friends
多项选择题