2. 外语
  3. The passage tells us that London’s first Light Rail System The trains on the DLR are controlled by

The passage tells us that London’s first Light Rail System The trains on the DLR are controlled by

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问题 The passage tells us that London’s first Light Rail System
The trains on the DLR are controlled by
选项 A、an on-board central computer.
B、a computer engineer on board.
C、two-way radios operated by the drivers.
D、a computer center based somewhere along the line.
答案A
解析
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