基站监控系统的作用是通过各种传感器采集基站内（）；（），并将数据、告警信息送到集中监

阅读理解。根据短文完成下边的对话A-reporter B-me。

                                                                           My school life

     My home is far from our school. So I live in school from Monday to Friday. In school, there are many

  friends. We can play and study together. It's fun. This term, school begins at 8:00. We have more (更多

 的) time to sleep. Everyone is happy. I usually eat bread for breakfast at half past seven. After lunch and

  supper, I usually go for walks (去散步) with my classmates for about fifteen minutes (分钟).

     We have twelve subjects in school. I like English best! Our English teacher teaches us a lot. And she is

 lovely and fairly. We all like her. We have much fun in English classes.

     In school, I hate washing clothes (洗衣服). It's tired and boring. We don't have too much homework in

  school. Sometimes, I go to the library to read books. It's good for me. Now I am in grade 2, I must work

  hard. I think I can be a good student. What about you? Let's study hard together!

A: Do you go to school every day?

B: No. I live __1__ our school. So I live in school on weekdays.

A: Do you like to live in school?

B: Yes. Because I can __2__ with my friends.

A: When do you begin school?

B: __3__ .

A: Well, you can have more time to sleep.

B: Yes, and Everyone is happy.

A: What do you usually do after lunch?

B: __4__ .

A: It's good for your health (健康). Can you tell me what your favorite subject is?

B: __5__ .

A: Thank you!

（1）求值：lg2•lg50+lg5•lg20-lg100•lg5•lg2；

（2）已知log₇3=a，log₇4=b，求log₄₉48．

西部大开发有利于发展少数民族的经济，促进民族团结。[ ]

往复式压缩机是依靠气缸内（）作往复式运动，使气缸（）周期性变化，从而达到压缩、输送气体的目的。

A、活塞、容积

B、连杆、容积

C、容积、活塞

D、活塞、连杆

强心苷强烈酸水解的条件是（）

A.3～5mol/L盐酸长时间加热

B.3～5mol/L盐酸长时间加热加压

C.3～5mol/L盐酸短时间加热加压

D.3～5moI/L盐酸短时间加热

E.3～5mol/L盐酸时间加压