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问题 单项选择题

ADS和CPDLC功能的实现需要FANS航空器首先向地面空管系统发出首次登录（InitialAFNLOGON）申请（FN-CON），然后（）。

A.管制员可以和航空器驾驶员进行陆空通话

B.航空器驾驶员才可以ADS和CPDLC同管制员之间传递位置信息

C.地面系统收到并发出确认信息（FN-AK）后方可进行ADS或CPDLC数据的交换

D.管制员通过话音通知该航空器，可以进行ADS或CPDLC数据的交换

答案

参考答案：C

写作题

Most people feel lonely sometimes, but it usually only lasts between a few minutes and a few hours. This kind of loneliness is not serious. In fact, It is quite normal. For some people, though, loneliness can last for years. Psychologists are studying this complex phenomenon in an attempt to better understand long-term loneliness. These researchers have already identified three different types of loneliness.

The first kind of loneliness is temporary. This is the most common type. It usually disappears quickly and does not require any special attention.

The second kind, situational loneliness, is a natural result of a particular situation ---for example, a divorce, the death of a loved once, or moving to a new place. Although this kind of loneliness can cause physical problems, such as headaches and sleeplessness, it usually does not last for more than a year. Situational loneliness is easy to understand and to predict.

The third kind of loneliness is the most severe. Unlike the second type, chronic loneliness usually lasts more than two years and has no specific cause. People who experience habitual loneliness have problems socializing and becoming close to others. Unfortunately, many chronically lonely people think there is little or nothing they can do to improve their condition.

［写作内容］:

1) 以约30词概括短文的要点；

2) 以约120词就“孤独”这一话题谈谈你的看法，并包括以下要点：

a. 描述你感到孤独的某个时刻；

b. 解释你为什么觉得孤独,你怎样排除孤独感；

c. 根据你的经历，给出排除孤独的建议。

［写作要求］:

1. 可以使用实例或其他论述方法支持你的论点，也可以参照阅读材料的内容，但不得

直接引用原文中的句子；

2．作文中不能出现真实姓名和学校名称。

［评分标准］:

概括准确、语言规范、内容合适、篇章连贯。
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问答题 简答题

池水的运动或分层对养虾生产有哪些利弊？
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