单项选择题

绿色智能矿山的智能主运输系统通过采用先进的监测技术与控制方法，对胶带输送机实现智能控制，实现煤流系统智能调速功能，达到无人值守、节能降耗、减人提效的目标。
A、正确
B、错误

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A. 用和底色相同的线

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In September 1944 he was able to return to his academic duties, but soon after the war ended he _______ a serious illness and did relatively little research thereafter (从那以后). A.
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