2. 外语
  3. A、By a central control system. B、By a mechanical ann. C、By several separated computers. D、By a few people. A由“And secondly，the c

A、By a central control system. B、By a mechanical ann. C、By several separated computers. D、By a few people. A由“And secondly，the c

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问题  
How is the new production line controlled?
选项 A、By a central control system.
B、By a mechanical ann.
C、By several separated computers.
D、By a few people.
答案A
解析 由“And secondly，the control is centralized.”可知答案。
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