皮皮学，免费搜题
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【单选题】
局域网主要在OSI参考模型中的哪一层中实现?()A.
数据层
B.
应用层
C.
传输层
D.
数据链路层
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】What does Mary mean?
A.
She means that her mother is better.
B.
She thinks her mother is very well.
C.
She thinks that her mother is very ill.
【简答题】根据短文内容及首字母提示，填上所缺单词，使句意完整 Every mother is great, so is my mother. My mother is a common worker. But I love h___小题1:very much. My mother likes t_小题2:stories. She also likes helping others. So she is po...
【单选题】下列电对的电极电位 ψ Ө 值不受介质 pH 值影响的为
A.
MnO 2 /Mn 2+
B.
H 2 O 2 /H 2 O
C.
Br 2 /Br -
D.
S/H 2 S
【简答题】单句改错。 1. He is still afraid of fly in an airplane . A B C D ( ) 2. Jill could play piano when she was a child. A B C D ( ) 3.He use to play...
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