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【多选题】
下面关于以太网的描述错误的是A.
数据包以广播方式发送
B.
所有结点可以同时发送和接收数据
C.
两个结点相互通信时,其它结点不检测总线上的信号
D.
网络中有一个控制中心,用于控制所有结点的发送和接收
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】请听下面一段材料，回答第1-4题。 1. What has the woman been doing all afternoon? A. Looking at the apartment ads. B. Reading some really interesting news. C. writing some house sales ads. 2. What does the man think ...
【单选题】搜索含有 data bank 的PDF文件,正确的检索式为( )。
A.
data and bank and pdf
B.
data+bank+pdf
C.
data+bank+file:pdf
D.
"data bank" filetype:pdf
【简答题】英译汉: Attached are details of the shipments to be insured under our usual conditions. The goods leave here per S.S. Twilight for Liverpool on July 1.
【单选题】—Do you like country ? —Yes, ________. [ ]
A.
Yes, I am a country fan
B.
Yes, I am a pop fan
C.
Yes, I am interested in classical music
D.
Yes, he is a fan
【单选题】搜索含有“data bank”的PDF文件,正确的检索式为:
A.
data+bank+pdf
B.
data+bank+file:pdf
C.
data and bank and pdf
D.
data bank filetype:pdf
【简答题】Attached are details of the shipments to be insured under our usual conditions. The goods leave here per S. S. Twilight _____________ Liverpool on July 1st.
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