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【单选题】

弧立障碍物标的灯质是（）。

A.
等明暗红光
B.
联闪两次白光
C.
等明暗白光
D.
瓦光
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题目标签：障碍物
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【单选题】飞行的安全高度是避免航空器与地面障碍物相撞的（）
A.
航图网格最低飞行高度
B.
最低飞行安全高度
C.
最低飞行高度
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【单选题】客室门的障碍物尺寸（）mm
A.
25×100
B.
30×65
C.
25×60
D.
30×60
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【判断题】障碍物越大,衍射现象越明显。
A.
正确
B.
错误
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【单选题】关门障碍物检测为（ ）次。
A.
1
B.
2
C.
3
D.
4
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【简答题】Choose the words or expressions and complete the passageExam time is the most stressful (最有压力的) period of the year. You’ve worked all the term on your classes and now it’s the time to prove what you h...
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【单选题】Part 3 Reading and Writing (第三部分 读写) (共39分) IX. Reading comprehension: (24分) A. Choose the best answer: (6分) ★ More than 50,000,000 people live in the rainforests of the world and most of them do not ...
A.
More than five million.
B.
More than fifty million.
C.
More than five hundred million.
D.
More than fifty thousand.
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【简答题】马为什么有惧怕障碍物的现象？
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【简答题】Good news for lovers― a tank has come out recently. In this you are in a tank and the screen shows your view of the landscape outside. You gain points by shooting enemy tanks, supertank...
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【单选题】当障碍物的直径大于1/2λ时，将发生（）
A.
折射
B.
反射
C.
衍射
D.
不反射
E.
不折射
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