问题描述：
[单选]
（）作为专用调度电话、无线调度电台故障情况下的后备调度通信工具
A．公务电话
B．私人手机
C．400兆
D．800兆
参考答案：查看无
答案解析：无
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答案解析：无
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上一篇：Albert Einstein"s Compass 艾尔伯特•爱因斯坦的指南针 Albert Einstein"s father brought a compass home． "See what I have for you， boy． A box with a magic needle ． Look! Turn the box any way you like， the needle points only that way．” Albert took the box and placed it on his hand． He turned it one way， then the other． Albert was so interested in the toy． He lay in bed with the compass． Slowly， he turned it， but the needle would always find its way back to pointing north． The boy"s eyes were so bright and his cheeks were red． That night Albert did not fall asleep for a long time． And the compass became his dearest toy． It led little Albert into the world of science． It led little Albert into the world of science．I．Multiple choice．单项选择。1．What did Albert"s father bring home？
下一篇：变更发车进路时，信号楼值班员须经（）同意，并通知司机，经司机同意后方可关闭信号变更进路
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