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【单选题】
在Windows 7中,若要退出当前应用程序,一般不通过下列操作中的__________来完成。
A.
单击“关闭”按
B.
按Alt+F4组合键
C.
控制菜单栏
D.
按Alt+Esc组合键
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参考答案:
举一反三
【单选题】单片机输出信号为 电平。
A.
RS-232C
B.
TTL
C.
RS-449
D.
RS-232
【判断题】Owen felt that his son's purchase was a waste of money.
A.
正确
B.
错误
【单选题】Owen felt tht his son's purchase ___________.
A.
was a waste of money
B.
meant he did not like guns
C.
was money well spent
D.
was too easily broken
【简答题】Tommy's mother felt surprised that his son__________
【单选题】Q5 Owen felt that his son’s purchase ______
A.
was a waste of money
B.
meant he did not like guns
C.
was money well spent
D.
was too easily broken
【简答题】多肉植物的 贮水组织 主要分布在______
【单选题】单片机输出信号为?电平?
A.
RS-232C
B.
TTL
C.
RS-422
D.
RS-485
【单选题】下面哪一条tar命令可以实现及打包又压缩home文件夹的功能?( )
A.
tar   –cvf    home.tar     /home
B.
tar  -tvf    home.tar
C.
tar   -xvf    home.tar
D.
tar  -cjvf    home.tbz    /home
【单选题】单片机输出信号为 电平
A.
RS-232C
B.
TTL
C.
RS-232
D.
RS-485
【简答题】A.He felt his assignment was tougher than Sue's. B.His s complained about his service. C.He thought the boss was unfair to him. D.His boss was always finding fault with his work.
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