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问题 单项选择题

按下NAV调频控制面板上的BRG按钮后有什么现象？

A、BRG灯亮，显示窗口下一行的预选频率被VOR航向数据代替显示，如果不人工切换这个显示将一直不变。

B、BRG灯亮，显示窗口下一行的预选频率被VOR航向数据代替显示，且这个显示在6到10秒后自动切回到预选频率显示。

C、只是BRG灯亮，没有其它的显示。

D、都不对。

答案

参考答案：B

填空题

在Rt△ABC中，CB=4，CA=3，AB=5，点P为三条角平分线的交点，则点P到各边的距离都是   .
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填空题

1) ______ the Oral Approach
2) ______ the Cognitive Approach
3) ______ the Audiolingual Method
4) ______ the Natural Approach
5) ______ the Communicative Approach
a) Dictation, imitation and controlled oral-based reading and writing tasks.
b) Dialogues and pattern practice form the basis of the classroom practice.
c) The first step in the classroom is to present all new sounds, vocabulary and structures in a manner meaningful to each student.
d) In the early stages of speech production, it uses random volunteered group response, which place little demand on the individual student but allow early use of the target language.
e) Developing listening and note-taking skills using audio-video materials; giving oral presentation; project work; role-play and simulation.
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