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【多选题】
在考虑基站布局时需要对网络结构进行深入分析，一般可将网络结构按照层次划分为高层站、中层站和低层站。关于高层站的特点，说法正确的有：（）A.
高层站的天线高度远高于建筑物的平均高度，覆盖范围内涵盖了多个中层站的基站；
B.
高层站对频率资源的使用效率较高；
C.
在中等城市地区，除个别原有基站为话务流向控制或地形原因而特殊设置为高层站外，一般不考虑建高层站；
D.
高层站更能有效解决市区内快速移动用户的通话问题。
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】根据《票据法》的规定，支票上可以由出票人授权补记的事项是（ ）。
【简答题】在word中下列哪个字号最大( )。A. 初号 B.小三号 C.五号 D.三号
【单选题】-------- Did you go to the film festival? -------- Yes, it was excellent. Zhang Yimou’s latest film was really a _______ for the eyes.
A.
flash
B.
feast
C.
sight
D.
scene
【单选题】听力原文：W: What time is it now? M: Oh! It's already 7: 25. W: We are late for the film. It starts at 8: 00,but it takes us 45 minutes to get to the cinema. M: We must hurry. How late will they be for the...
A.
5 minutes.
B.
10 minutes.
C.
15 minutes.
【单选题】听力原文：W：So how was the premiere of the film acted by my favorite star last Friday? May I miss out on something wonderful? M：Absolutely not! I kept looking at my watch the whole time． Q：What does the ma...
A.
His watch distracted him during the film.
B.
He almost missed the film.
C.
The film failed to meet his expectations.
D.
The film was too late to be show.
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