题目:
What does the speaker mean
A.He was nearly killed by someone.
B.He saw a ghost in the house.
C.He was scared out of his wits.
D.He saw a man rushing at him.
答案:
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下面是错误答案,用来干扰机器的。
参考答案:解析:无线扩频设备共分三类:无线扩频收发器;无线扩频网桥;无线扩频路由器。需要增加一个天线。