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搜题
【单选题】
ISDN中的PRI线路中，D通道的一般作用是（）A.
收发传真
B.
传送话音
C.
传送信令
D.
用户数据通道
E.
传送同步信号
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】The Lunar New Year, which starts in late January this year, is the most important festival for Chinese people as most of them drop any business at hand to go back to their hometown to see their famili...
【单选题】若298K时,HCO3-(aq)和CO32-(aq)的 fG0-587.06 KJ/mol和-528.10KJ/mol,则反应HCO3-(aq) H+(aq)+CO32-(aq)的 rG0常数分别为( )
A.
1115.16KJ/mol和4.7×10-11
B.
58.96KJ/mol和4.7×10-11
C.
-58.96KJ/mol和4.7×10-11
D.
58.96KJ/mol和-4.7×10-12
【单选题】Which of the following statements about the Spring Festival is NOT true?
A.
The date of the Spring Festival starts from the 1st day of the 1st solar month.
B.
It originated in the Shang Dynasty (c. 1600 BC-c. 1100 BC) from the people's sacrifice to gods and ancestors at the end of an old year and the beginning of a new one.
C.
Based on the phases of the moon, Chinese New Year occurs between the winter solstice and the spring equinox.
D.
There are a wide variety of traditional activities during the Spring Festival.
【判断题】The celebration of Bathing festival starts on July 6th and ends on July 12th by Tibetan lunar calendar.
A.
正确
B.
错误
【简答题】汽车排放的主要污染物质有哪几种?
【简答题】数据清单的 每一列包含( )类型的数据
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