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已知：①有机化学反应因反应条件不同，可生成不同的有机产品。例如： ②苯的同系物与卤素单质混合，若在光照条件下，侧链烃基上的氢原子被卤素原子取代；若在催化剂作用下，苯环某些位置上的氢原子被卤素原子取代。 工业上利用上述信息，按下列路线合成结构的物质，该物质是一种香料。 请根据上述路线，回答下列问题： (1)A的结构可能为_____________、____________________。 (2)反应③的反应类型为_________________；反应⑤的条件是_______________ (3)反应④的化学方程式为(有机物写结构，并注明反应条件，下同)： __________________________________________________。 (4)工业生产中，中间产物A反应③④⑤得D，而不采取将A直接转化为D的方法，其原因是____________________________。 (5)检验产品中官能团的化学反应方程式为：_____________________________。 (6)这种香料具有多种同分异构体，其中某些物质有下列特征：①其水溶液遇FeCl 3 溶液呈紫色；② 苯环上的一溴代物有两种；③分子中没有甲基。写出一种符合上述条件的物质可能的结构： 。
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【简答题】机器人使用的驱动装置主要是电力驱动装置,如 、 等,也有采用液压、气动等驱动装置。
【单选题】听力原文： Iranian President Mohammad Khatami says Iran might resume uranium enrichment and halt unannounced inspections of its nuclear sites unless the LIN Nuclear Watchdog agency agrees to recognize Iran...
A.
a resumption of uranium enrichment
B.
a halt of international inspections of its nuclear sites
C.
the recognition of its cooperation with the UN
D.
both A and B
【单选题】According to local tradition, Sultan Abu ibn al-Hasan founded the East African trading state of Kilwa in the mid-tenth century. Professor Ascalon, however, argues that Sultan al-Hasan did not rule in ...
A.
The Hunsu Kubwa Palace, the largest stone structure in sub-Saharan Africa prior to the eighteenth century, dates to the rule of Sultan Sulaiman in the fourteenth century.
B.
The oldest mosque on the island, which has traditionally been attributed to the reign of Abu ibn al-Hasan, has a foundation dating to ca. 800 Ｃ.Ｅ.
C.
The Kilwa Chronicle, a document based on Kilwa oral history that has been shown to be unreliable on matters of chronology, dates the rise to power of Sultan al-Hasan to the year 957 Ｃ.Ｅ.
D.
Silver and copper coins bearing the name of Abu ibn al-Hasan have been found in archeological sites dating from the late eleventh to the fourteenth centuries, but none have been found in sites dating earlier than the late eleventh century.
E.
Archeological records suggest that the island of Kilwa enjoyed a period of economic prosperity beginning in the mid-eleventh century.
【判断题】The starting year of the Persian Calendar is the year when Prophet Mohammad deceased.
A.
正确
B.
错误
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