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【单选题】
用于在目标市场流量的分析网站是( )
A.
T erapeak
B.
Google
C.
Keywordspy
D.
Alexa
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参考答案:
举一反三
【单选题】下列化合物最易发生水解反应的是
A.
乙酸乙酯
B.
乙酰胺
C.
乙酰氯
D.
乙酸酐
【单选题】下列化合物最容易发生水解反应的是
A.
B.
酰胺
C.
酰卤
D.
酸酐
【单选题】下列化合物最易发生水解反应的是
A.
乙酸乙酯
B.
乙酰胺
C.
乙酰氯
D.
乙酸酐 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
【单选题】下列化合物最容易发生水解反应的是 。
A.
乙酸乙酯 ;
B.
乙酰胺 ;
C.
乙酸酐 ;
D.
乙酰氯。
【单选题】下列化合物最易发生水解反应的是
A.
乙酰氯
B.
乙酸酐
C.
乙酸乙酯
D.
乙酰胺
【简答题】阅读理解。 Several Asian hospitals are doing experiments with tele-medicine. Tele-medicine is a technology that allows doctors to 'see' patients without them being in the same place. This is made possible ...
【单选题】In English ,there are a lot of words formed by adding the prefix “tele-”,such as "teleconference","television","telescope","telephone",“telecommunications”. Do you know what does the prefix "tele-" me...
A.
与电有关的
B.
与水有关的
C.
远程的
D.
无需接触的
【简答题】阅读短文,并按要求回答问题。 Several Asian hospitals are doing experiments with tele-medicine. Tele-medicine is a technology that allows doctors to 'see' patients without them being in the same place. This is made ...
【单选题】After radio had developed to a very high level, what appeared as a necessary result?
A.
Television and radar.
B.
Modulated light and a scanning wheel.
C.
Superior television camera.
D.
Microphones and loudspeakers.
【单选题】下列各项中两个软件均属于系统软件的是
A.
DOS和UNIX
B.
MIS和UNIX
C.
WPS和UNIX
D.
MIS和WPS
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