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【多选题】
选择题3:在教学过程中,单片机的引脚进行分类,其中主电源输入引脚是指哪些引脚:A.
第40脚的正电源引脚GND。
B.
第40脚的正电源引脚VCC。
C.
第20脚的接地引脚GND。
D.
第20脚的接地引脚VCC。
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【简答题】A．After they receive 's degree. B．After they graduate from middle schools. C．After they receive bachelor's degrees. D．After general survey courses are completed.
【简答题】原子化系统分为火焰原子化器和无火焰原子化器两类。火焰原子化器由()、()和()组成。无火焰原子化器也称为(),其原子化程序分为()、()、()、()4个阶段。
【单选题】听力原文：M: What are you going to do after you graduate from college? W: I' m not sure. I may be a teacher. But I want to do more than just teaching, maybe practice law. How about you? M: I don't have any...
A.
He will become a teacher.
B.
He will become a lawyer.
C.
He will try a lot of jobs.
D.
He has not decided yet.
【单选题】查询“图书”表中书名含有“计算机”的图书信息,正确的选项是______。
A.
select * from book where bname like ‘_计算机_’
B.
select * from book where bname like ‘_计算机%’
C.
select * from book where bname like ‘%计算机_’
D.
select * from book where bname like ‘%计算机%’
【简答题】I would like to find a job in a(n)__ ____ company after I graduate.
【简答题】火焰原子化器由什么组成
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