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【简答题】
当定时/计数器在工作方式1下，晶振频率为6MHz，请计算最短定时时间和最长定时时间各是多少？
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【简答题】根据课文内容完成医生与三位病人的对话。 Linda Smith works at the school clinic. Yesterday afternoon, three students visited her office. The first one was Sam, a very fat boy. He said that he had a stomachache. Linda aske...
【简答题】根据课文内容完成医生与三位病人的对话。 Linda Smith works at the school clinic. Yesterday afternoon, three students visited her office. The first one was Sam, a very fat boy. He said that he had a stomachache. Linda aske...