目前应用最为广泛的一类局域网是Ethernet网。Ethernet的核心技术是它的随机争用型介质访问控制方法，即（）。
查看答案
Read the news report. Put the events in order.
Where did the “small act” take place?
A. In a hospital.
B. In a nursery school.
C. In a department store.
What was Rowena doing when she heard the noise?
A. She was playing with her daughter.
B. She was having coffee.
C. She was buying some clothes.
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