试题与答案

GPS天线安装中,必须考虑以下哪些因素()A、安装卫星天线的位置天空视野要开阔,周围

题型:多项选择题

题目:

GPS天线安装中,必须考虑以下哪些因素()

A、安装卫星天线的位置天空视野要开阔,周围没有高大建筑物阻挡,距离楼顶小型附属建筑应尽量远;

B、安装卫星天线平面的可使用面积越大越好,天线竖直向上的视角应大于90°;

C、安装地点不能处在频率400MHz以上、功率大于1W的定向发射天线的辐射范围内;

D、安装地点距离全向发射天线要在20m以上。

答案:

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参考答案:A, B, C, E解析:劳动者要成为具备签订劳动合同的主体资格,应当满足的基本条件是:①年龄条件,即必须年满16周岁;②文化条件,即应当完成国家义务教育,方能就业;③有劳动能力;④行为自由。作为...

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题型:选择题

2013 年11月15日,十八届三中全会通过了“单独二胎”政策。下图示意我国江西省从建国初期至今人口自然增长轨迹示意图,X表示初期,Y表示末期。读图完成下列各题。

小题1:下列有关图中人口变化的描述正确的是

A.I阶段人口老龄化问题突出

B.O拐点出现是受政府宏观调控的影响

C.II阶段会出现劳动力严重短缺

D.从X到Y,人口自然增长速度一直减慢小题2:单独二胎政策的实施,对该省近十年产生的影响可能是

A.老年人口数量会有所下降

B.出生人口性别趋衡

C.缓解劳动力短缺的问题

D.城市就业压力增大

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题型:阅读理解

     West Virginia-Public schools are using a dance video game to help get students in shape. In these

schools, students are often told to turn off their video games and get some exercise. The schools have

found a new way for their students to work out while playing a new video game. West Virginia is one

of the heaviest states in the country. About half of its fifthgraders are considered to be overweight, and

their parents are worried about that. To get them moving on a healthier path, the state's public schools

are using a video game called "Dance Revolution".

     To use the game, players should stand on a special mat in front of a TV screen. Following arrows

on the screen, players must move their feet to the specific symbols on the mat. Players must move

quickly, touching symbols on the mat at just the right time. With each song, they get more exercise.

     "If we can get children to change their behavior at a young age, they will hopefully grow up to be

healthy and active adults," said Carl Callison of Mountain State Blue Cross, a health care company.

West Virginia is ranked among the top three heaviest states. About a third of West Virginians are

considered to be  obese (肥胖的). Even more are considered to be overweight. Extra weight can lead

to serious health problems such as high blood pressure, diabetes (糖尿病), some cancers, and many

other health issues.

     "One out of three children born in West Virginia today will have diabetes by the time they grow up,"

said Nidia Henderson, a manager for the public employees' insurance program. "That's a terrible thing

and not acceptable."

     All of West Virginia's 157 middle schools are using the video game. School officials hope that all

public schools in the state will use the game within the next three years. However, officials emphasize

that the game is not meant to substitute physical education and health classes. The game will be part of

physical education classes and afterschool programs.

1. Why do public schools in West Virginia develop "Dance Revolution" ?

A. Because most of the students don't like dancing.

B. Because it can help students get a better shape.

C. Because losing weight is necessary to students.

D. Because it can make students' activities colorful.

2. The second paragraph mainly talks about________.

A. how to get more exercise

B. what are needed in the game

C. how to play a dance video game

D. who can practise the game

3. According to the text, which of the following is NOT true?

A. About one person in three West Virginians is overweight.

B. Overweight may cause a lot of diseases.

C. The problem of students' overweight has been realized.

D. There are only 157 middle schools in West Virginia.

4. The underlined word "substitute" in the last paragraph means "________".

A. replace  

B. change  

C. practise  

D. stop

5. Which is the best title for the text?

A. The Problem of Overweight

B. Dancing for Health

C. Overweight in West Virginia

D. A Dance Video Game

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