题干

核电站利用核能发电,它的核心设备是核反应堆。下列说法错误的是( )


A:目前核电站都是通过聚变反应来利用核能

B:核反应堆中发生的链式反应是可以控制的

C:原子核分裂或聚合时释放出核能

D:核能是一种不可再生的能源

上一题 下一题 0.0难度 选择题 更新时间:2018-02-02 06:02:44

答案(点此获取答案解析)

A

同类题1

任务型阅读

    Everybody has dreams, but not all these dreams can come true easily. ____ Read on and you can make your dream come true.

    Break your dream down into manageable “projects”. Achieving a dream can be complex and you might need to complete a number of different “projects” as you go forward. ____ Remember that you need to have all the parts and tools you need in order to be successful in achieving your dream.

    Take action on each “project”. Start taking action on each part of your dream. If you can, work on all of your projects at the same time—for example, try to do something for each project each week. ____ And keeping yourself moving forward is one of the best ways to motivated toward achieving your goal.

    ____ Find out how others have accomplished their goal. Do some research to find out how other people have achieved the same dream. Seek out the people who have achieved their dreams and talk with them or read their stories. Find out what they learned from their journey, and what they like best about achieving their dreams. You can find out about other successful dreamers by reading their biographies, watching documentary films, or reading about people on the Internet.

    Always know what's next on your list. As you are taking action on the different projects that lead you to your dream, be sure that you always know what to do next. Being unsure of your next step is one common way that people get stuck in their progress toward a goal. ____ Be sure that you will be ready for each one.

A. Be inspired by others.

B. People give up their dreams for this or that reason.

C. Manage your lime so that there is room for your dream.

D. Each week revisit your project lists to see what tasks are coming up.

E. Achieving your dream might require you to gain new skills or knowledge.

F. Figuring out what the different “projects” arc will move you toward your dream.

G. Even if you are moving in small steps toward your goal, you are still heading in the right direction.

同类题4

阅读下列文言文,完成下面题目。
                                                                                                                    邹忌讽齐王纳谏
         邹忌修八尺有余,形貌昳丽。朝服衣冠,窥镜,谓其妻曰:“我孰与城北徐公美?”其妻曰:“君美甚,徐公何能及公也!”城北徐公,齐国之美丽者也。忌不自信,而复问其妾曰:“吾孰与徐公美?”妾曰:“徐公何能及君也!”旦日,客从外来,与坐谈,问之客曰:“吾与徐公孰美?”客曰:“徐公不若君之美也!”明日,徐公来。孰视之,自以为不如;窥镜而自视,又弗如远甚。暮寝而思之曰:“吾妻之美我者,私我也;妾之美我者,畏我也;客之美我者,欲有求于我也。”
        于是入朝见威王曰:“臣诚知不如徐公美,臣之妻私臣,臣之妾畏臣,臣之客欲有求于臣,皆以美于徐公。今齐地方千里,百二十城,宫妇左右,莫不私王;朝廷之臣,莫不畏王;四境之内,莫不有求于王。由此观之,王之蔽甚矣。”
         王曰:“善。”乃下令:“群臣吏民能面刺寡人之过者,受上赏;上书谏寡人者,受中赏;能谤议于市朝,闻寡人之耳者,受下赏。” 令初下,群臣进谏,门庭若市。数月之后,时时而间进。期年之后,虽欲言,无可进者。燕、赵、韩、魏闻之,皆朝于齐。此所谓战胜于朝廷。