问题
单项选择题
关于网络操作系统，以下哪种说法是错误的______。
A．提供防火墙服务
B．屏蔽本地资源与网络资源之间的差异
C．管理网络系统的共享资源
D．为用户提供基本的网络服务功能
答案
参考答案：A
解析： 网路操作系统的基本任务是：屏蔽本地资源与网络资源，为用户提供各种基本网络服务功能，完成网络共享系统资源的管理，并提供网络系统的安全性服务。
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关于网络操作系统，以下哪种说法是错误的______。
A．提供防火墙服务
B．屏蔽本地资源与网络资源之间的差异
C．管理网络系统的共享资源
D．为用户提供基本的网络服务功能
参考答案：A
解析： 网路操作系统的基本任务是：屏蔽本地资源与网络资源，为用户提供各种基本网络服务功能，完成网络共享系统资源的管理，并提供网络系统的安全性服务。
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| Tony loved basketball. One afternoon on his way to a basketball game, he was walking and dreaming about playing college 1 the next year. Suddenly a car hit him and he was thrown three 2 into the air. Tony woke up in a 3 room. When the doctor told him that both his legs were broken, he knew his college basketball dreams were 4 . Tony did what the doctors told him. 5 it didn't work when he left the hospital,Tony was sent to a rehab (康复) center. A week after he arrived there, he met Sunny Chen. Sunny used to be a coach. His legs were hurt 6 in a skating accident. Though he couldn't move his legs, Sunny became a coach of a basketball 7 called the Suns. It was a on-wheelchair basketball team, because 8 on the team played from a wheelchair. Sunny invited Tony to 9 the game. Tony played badly, but for the 10 time since the accident, he stopped feeling sorry for himself. After becoming a part of the Suns, Tony improved quickly. Basketball Was like 11 for him. Tony was much better than before. When Tony became sad or 12 , Sunny was there to help him. The day 13 Tony left the center, he had dinner with Sunny. He asked Sunny 14 he could be so happy, even with his broken legs. Sunny 15 and said, "It's really quite easy. When you keep your face to the sun,the shadows (阴影) fall behind." | ||||
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