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–NO2 和-NH2 都是邻对位定位基( )
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–NO2 和-NH2 都是邻对位定位基( )
A、正确
B、错误
时间：2021-09-02 00:03
关键词：
青书学堂
川北医学院
有机化学
答案解析
B
相关问题
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
邻对位定位基都是活化基，间位定位基都是钝化基。 （ ）
–NO2 和-NH2 都是邻对位定位基( )
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下列基团中,属于邻、对位定位基的是( )
下列基团中，属于邻、对位定位基的有（）。
溴和乙基均为邻对位定位基，故二者均使苯环活化
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
羟基是邻对位定位基，它能使苯环活化，所以苯酚的取代反应比苯容易进行。
（）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．
Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.
Masters are（）solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
If he is a common carrier，he is absolutely responsible to the owner of the goods carried （）any loss or damage to them unless caused by an Act of God or the Queen’s enemies，or the inherent vice in the goods themselves，or the negligence of the owner of the goods，or a general average sacrifice.
系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。
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