One suggestion was that the nation observe a minute or two of total blackout(停电). All electric power would be shut off in homes, streets and factories. Perhaps this suggestion plan made Americans realize fully what Edison and his inventions meant to them. Electric power was too important to the country. Shutting it off even a short time would have led to complete confusion. A blackout was out of the question.
On the day of Edison's funeral(葬礼), many people silently dimmed their lights. In this way they honored the man who had done more than anyone else to put the great force of electricity at his countrymen's fingertips.
Which of the following statement is true according to the first paragraph?
A.Edison received the first American patent.
B.Edison got the most patents in America at that time.
C.Edison was the only American inventor.
D.Edison was the first American inventor.
第1题
苦参碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第2题
古柯碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第3题
苦参碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第4题
古柯碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第5题
古柯碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第6题
苦参碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第7题
小檗碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第8题
小檗碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
第9题
小檗碱属于
A、吡啶类生物碱
B、莨菪烷类生物碱
C、异喹啉类生物碱
D、吲哚类生物碱
E、有机胺类生物碱
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!