直放站设备的常见故障有以下几种（） A.功率低 B.增益低 C.频_爱下问搜题

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问题多项选择题

直放站设备的常见故障有以下几种（）

A.功率低

B.增益低

C.频偏

D.电源

答案

参考答案：A, B, C, D

阅读理解

	Ben is twelve years old. He is in Class 5, Grade 7, He likes sports. He plays sports every day. He likes playing basketball, because he thinks it is very interesting. He often plays basketball with his classmates after school. He also studies hard. He often helps other students. We all like him very much.
	Linda is nine years old. She’s in Class 5, Grade 4. She likes sports. She likes playing table tennis with her father. She also likes to watch sports on TV. She can help her mother do housework at home.

1. Do Ben and Linda like sports?
A. Yes, they do.
B. No, they don’t.
C. Ben likes basketball.
D. Linda likes table tennis.
2. Why does Ben like playing basketball?
A. Because it is easy.
B. Because it is difficult.
C. Because it is relaxing.
D. Because it is funny.
3. Who does Ben play basketball with after school?
A. His mother.

B. His friends.
C. His classmates.
D. His father.
4. Linda plays table tennis with ________.
A. her father
B. her mother
C. her classmates
D. her friends
5. Are Ben and Linda classmates?
A. Yes, they are.
B. No, they aren’t.
C. Yes, they aren’t.
D. We don’t know.

单项选择题

《建筑法》规定的建筑活动是指()活动。

A.各类房屋建筑及其附属设施的建造

B.各类房屋建筑或其周围环境、设施小品的建造

C.各类房屋建筑及其附属设施的建造和与其配套的线路、管道、设备的安装活动

D.各类房屋建筑及其附属设施的建造和建筑所在街区、城市的建造活动