用户反映A站点扩容后覆盖范围缩小，该站点原配置为：BTS30（O1）_爱下问搜题

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问题问答题简答题

用户反映A站点扩容后覆盖范围缩小，该站点原配置为：BTS30（O1）两根馈线，扩容为O2，只增加一个载频。分析发现，扩容后两载频经过了CDU合路，为解决覆盖缩小，有两个方案：方案一、采用EDU；方案二、采用双CDU。随着业务量的进一步的增加，又增加一个载频，扩容为O3。请回答下面几个问题。

CDU上有TX1、TX2、TX_COMB、TX_DUP四个端口，TRX0单板在O1时连接到哪个端口，才会出现扩容为O2后覆盖范围缩小的问题。

答案

参考答案：

TX_DUP

完形填空

Alicia was a young woman who liked to exercise for her health. In fact, she walked five kilometers before      every morning, and went swimming once a week at the swimming pool. She didn’t smoke and never      . She didn’t eat chocolate. She didn’t eat sweet and fatty food,       . She weighted herself every day.
One day Alicia was on her daily walk when she saw a                sitting in a rocking chair under a tree. He looked very old and his hair was white. He looked thin and weak, and his hands were shaking,           he looked very happy.
He smiled at her and said, “Good morning! Lovely day, isn’t it?”
He had a wide smile         his face, and his eyes shone with happiness. But Alicia saw that he did not have teeth.
“Good morning!” replied Alicia. “Yes, it is a lovely day.”
Alicia thought he        very old and wise. She thought he must be at least 90 years old! She decided to ask him about the           of a happy old age.
“I hope you don’t         me asking,” she said, “but what is your secret for being so happy at your age? I hope I can look as happy as you do           I am your age.”
The man in the rocking chair said, “My secret for        ? I smoke twenty packets of cigarettes every week, and drink three bottles of wine every day. I eat hamburgers and chocolates whenever I want. I never eat vegetables. I never walk anywhere and I never play sports. I sit at home every day.”
Alicia was         . She didn’t expect the man to give her an answer like that. She wondered how the man got to be so old when he did        wrong. She thought he should be          and unhappy. Perhaps she was wrong. Maybe, she thought, people could live a long happy life          eating well or doing lots of exercise.
“How old are you?” she asked.
“It’s my birthday today,” said the man. “I’m forty-seven!”

单项选择题

电炉炼钢的热量来源主要为（）

A.化学热

B.物理热

C.电能

D.化学热、电能及物理热