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有一个碳碳双键的开链烯烃通式为( )
烯烃的双键中含有较易断裂的α键,双键容易极化,所以烯烃的性质比烷烃活泼的多。
由于苯环中存在碳碳双键,所以苯具有烯烃的典型性质。
两个双键被一个单键隔开的二烯烃称()双键二烯烃。
两个双键之间有()个单键的二烯烃,不属于间隔二烯烃。
两个双键之间有()个单键的二烯烃,称为累积二烯烃。
单烯烃是含有()碳碳双键的链状不饱和烃。
两个双键与同一个碳原子相连的二烯烃,称为()。
烯烃是含有碳碳双键的有机物。
凡是含有碳碳双键的有机物都是烯烃。
分子中含有两个碳碳双键的开链不饱和烃叫做二烯烃。
碳碳双键和碳碳三键分别是烯烃和炔烃的官能团。
()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.
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.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
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