大航海时代的开启是因为陆路的 贸易被垄断,欧洲转人向海洋寻求出路的结果。
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Hard disks are permanent or nonvolatile storage.
A. 对
B. 错
Using RAM, data and programs can be retained after the computer has been shut off.
A. 对
B. 错
All utility programs belong to the application software.
A. 对
B. 错
With the operating system and system utilities, the computer can run any application program.
A. 对
B. 错