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【单选题】
一个计算机操作系统通常应具有功能模块是（）。A.
CPU的管理，显示器管理，键盘管理，打印机和鼠标器管理等五大功能
B.
硬盘管理，软盘驱动器管理，CPU管理，显示器管理和键盘管理等五大功能
C.
处理器(CPU)管理存储管理，文件管理，输入/输出管理和文件管理等五大功能
D.
计算机启动，打印，显示，文件存取和关机等五大功能
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反馈参考答案：
举一反三
【单选题】车联网系统分为三大部分
A.
车载终端，云计算处理平台，接收平台
B.
车载终端，云计算处理平台，数据分析平台
C.
车载终端，数据分析平台，接收平台
D.
车载终端，数据接收平台
【简答题】If he had taken his lawyer’s advice, he (save) himself a great deal of trouble.
【单选题】If he had taken his lawyer’s advice, he(save)___ himself a great deal of trouble.
A.
saves
B.
would have saved
C.
would save
D.
saved
【单选题】If he had taken his lawyer’s advice, he ______ himself a great deal of trouble.
A.
save
B.
would save
C.
would have saved
D.
saved
【单选题】执行以下程序段 a$=′′Visual Basic Programming′′ b$=′′C++′′ c$=Ucase(Left$(a$,7))& b$ & Right$(a$,12) 后,变量c$的值为( )。
A.
Visual Basic Programming
B.
VISUAL C＋＋ Programming
C.
Visual C＋＋ Programming
D.
VISUAL BASIC Programming
【单选题】If he had taken his medicine yesterday, he _____ well now.
A.
would be
B.
would have been
C.
will be
D.
is
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