题目内容
在三菱变频器中，当P79=3时是外部工作模式。( )
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Fillin the blanks with the words from the boxes.careertourism grade motivated freshmanstressed assignment schedulesemester courses1.I want to keep going with free time activitiesthis___________.2.She got a _________ of 100in the test.3.I'm really____________out about work at the moment.4.There are still some vacancies for students in science andengineering___________.5.Chinese will be on the school ____________from next year..6.Our staff members are hard-working and highly____________.7.He has been concentrating on his teaching _____________.8.The___________for the course involves writtenworkand practical tests.9.____________ is the majorsourceofincomefor thearea.10. Johnisa_____________ from New York State
信源编码的主要功能之一是对数字信号进行( )
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使用载波的两种不同幅度来表示二进制值的两种状态的调制方法称为（ ）。
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