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【简答题】
计算机系统中,若总线的数据线宽度为16位,总线的工作频率为133MHZ,每个总线 周期传输一次数据,则总线带宽为(). A. A:133MB/S B. B:2128MB/SC C. C:266MB/S D. D:16MB/S
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【简答题】放大镜的工作原理是,当物体到透镜的距离 时,成正立的、放大的、虚像。
【单选题】That tree looked as if it ______ for a long time.
A.
hasn't watered
B.
didn't water
C.
hadn't been watered
D.
wasn't watered
【单选题】What is not tree of directed communication?
A.
The sender of a message has a specific audience.
B.
Male zebra finches sing to female finches.
C.
Mothers talk to their babies.
D.
Male zebra finches sing to themselves.
【单选题】That tree looked as if it____________for a long time.
A.
hasn't watered
B.
hadn't been watered
C.
didn't water
D.
wasn't watered
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