基站内设备机架背面和墙之间不小于100mm，如需要背部操作，距离应不小于（）mmA、
题型：单项选择题
问题：
基站内设备机架背面和墙之间不小于100mm，如需要背部操作，距离应不小于（）mm
A、500
B、600
C、700
D、800
题型：单项选择题
从方框中选择正确的语句补全对话 使对话意思完整(6分)
A
A: What did you do last night?
B: I went to the concert.
A:小题1:
B: Yes. I had a good time. I enjoyed the music and songs very much.
A: 小题2:
B: They were very good.
A: When will there be the next concert?
B: Next Friday evening. Do you want to go?
A: Yes, I do.小题3:
B: 50 yuan.
A: It’s kind of expensive.
B: I agree.