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【简答题】
(10分)分子中只含有2个碳原子的某烃A是其同系物中含碳量最高的物质； 1mol A与1mol HCl加得到B；1mol A与1mol H2加得到C，并能继续发生如下列图表所示的转变： 据此回答下列问题 （1）写出实验室制取A的反应方程式 ___ _ ____________ ___ ____ ； （2）以B为原料经过加聚反应所得的合成树脂的结构_ _ ___ __ ___。 （3）写出由D和F生成G的反应方程式： ________________________ ________ __ （4）写出E与银氨溶液反应的化学方程式: ___________ ____ __ ____ _________ （5）写出符合以下两个条件的G的同分异构体，①能水解 ②能发生反应： 。
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【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, he had always worked as a (n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【单选题】When Mr. Smith took over the company, it was already heavily______ and had no money to pay the workers.
A.
in danger
B.
in relief
C.
in debt
D.
in return
【单选题】水平角测量时，角值β =b-a。现知读数a为82°33′24″，读数b为102°42′12″，则角值β是【 】
A.
20°18′46″
B.
20°08′48″
C.
20°42′24″
D.
20°38′12″
【简答题】Mr. Lang worked in a factory. As a driver, he was busy. Sometimes, he brought some materials to the factory, and most of the time, he had to carry the goods to the customers of the factory. It was not...
【单选题】—You seem familiar with Mr. John? —Sure, we ______ together for three years in the 1990s.
A.
have worked
B.
had worked
C.
are working
D.
worked
【简答题】路面结构的主要层次是 、 、 。 任何一种路面必须有 。
【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, be had always worked as a(n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【简答题】在零件图上,标注Φ6H7,表示要进行 ,钻底孔 。
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