汽油发动机在大负荷和全负荷工况时，为了获得最大功率的工况，其过量空气系数α值应为（）
题型：单项选择题
问题：
汽油发动机在大负荷和全负荷工况时，为了获得最大功率的工况，其过量空气系数α值应为（）。
A.0.6～0.8
B.0.9～1.1
C.0.8～0.9
D.1.1～1.2
题型：单项选择题
阅读下面的短文，按要求完成所给任务。
Reading is a very good hobby for all the students. You can know much about the world ①______ the help
of all kinds of books. I'm sure everyone has a favorite subject. For example, some are interested in animals,
some in history, and some are interested in literature. Mine is science. I like ② it because it's fun and
educational.
My favorite novel is Around the World in Eighty Days. ③It was written by Jules Verne, a French writer.
Jules Verne was regarded as father of Modern Science Fiction because he devoted (奉献) himself to literature
and wrote several ④well-known scientific romances.
The exciting story of Around the World in Eighty Days tells us about an English gentleman whose name is
Mr. Phileas Fogg, He travels around the world in eighty days. From the story, we can see the writer's love for
the sea, traveling and adventure (冒险). In fact, they played an important role in his life. ⑤多亏了 the writer's
imagination, language skills and scientific and geographical (地理的) knowledge, we can feel as if we were
there when we read the story.
1. 根据上下文写出①处所缺的单词。
______________________________
2. 写出②处画线单词所指代的内容。
______________________________
3. 将③处改为主动语态。
Jules Verne, the French writer _________ the novel Around the World in Eighty Days.
4. 写出④处画线单词的同义词。
______________________________
5. 将⑤处画线汉语翻译成英语。
______________________________