同步数字体系（SDH）系列最基本模块信号是STM-1，其速率为2.048Mbit/s_爱下问搜题

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问题判断题

同步数字体系（SDH）系列最基本模块信号是STM-1，其速率为2.048Mbit/s。

答案

参考答案：错

补全对话，情景问答

根据对话内容，从方框内选择合适的句子补全对话。（有两项多余）

      A. Who has gone there?
      B. When are you going there?
      C. I haven't been there, either.
     D. I'e seen and learnt a lot there.
      E. What have you done for the holiday?
     F. Which pavilion do you want to visit most?
     G. But I hear there're a large number of people every day.

M: Yang Liu, the summer holiday is over. (1)___________
W: I have visited the World Expo Garden in Shanghai.
M: That must be exciting. (2)___________ You must have waited for a long time to visit some wonderful pavilions, didn't you?
W: Yes, I did. But I think it's worth (值得) visiting. (3)___________
M: You're right. I want to go to the World Expo Garden, too.
W: (4)___________
M: I'm planning to go during National Day holiday.
W: (5)___________
M: The China Pavilion, of course.
W: Have a pleasant trip.M: Thanks.

判断题

建筑管材主要器具和设备必须有完整的安装使用说明书。在运输、保管和施工过程中，应采取有效措施防止损坏或腐蚀。