钻石比色板(槽),其材质可为()。A.塑料 B.纸质 C.木质 D.塑料或纸质 发布时间:2019-09-15 19:26 │ 来源:www.tikuol.com 题型:单项选择题 问题: 钻石比色板(槽),其材质可为()。A.塑料B.纸质C.木质D.塑料或纸质
题型:单项选择题 下列加粗的字注音有误的一项是[ ]A.信笺jiān 鸫鸟dōng 绽裂zhàn 阴霾máiB.一绺liǔ 濒临bīn 恪守gè 目眩xuàn C.牛虻méng 眼睑jiǎn 忏悔chàn 尴尬gà D.踉跄qiàng 凯歌kǎi 瞳孔tóng 仲夏zhòng 查看答案
题型:单项选择题 完形填空。 He lost his arms in an accident. Since then, he has had to depend on his 1 brother. In order to 2 him, his younger brother became his shadow (影子), never leaving him 3 for years. Except for writing with his 4 , he was completely unable to do anything in his life. As the two brothers 5 together,then one day, his younger brother had to work far from him, living his own life, as many normal people do. So he was heart-broken and didn't know 6 to do. A similar misfortune (不幸) happened to a girl, 7 . One night her mother disappeared after arguing with her father. So her father went out looking for her mother, 8 her alone at home. She tried to prepare meals for her parents, but only to catch a big fire, 9 took her hands away. 10 her elder sister who was studying in another city, showed her willingness to help her, she made up her mind to be completely independent (独立的). At school, she always studied hard. she learned to be self-reliant (自理). One day, the boy and the girl were both invited to a television interview program. They both 11 to write something on a piece of paper with their toes. The boy wrote: My younger brother's arms are my arms; while the girl wrote: "I am 12 . Though I lost my arms, I still have legs." They had 13 experienced a terrible disaster (灾难), but their different attitudes showed the nature of their lives. If you choose only to complain and 14 it, it will always follow you wherever you go. But if you decide to be 15 , the hardship will turn out to be a fortune on which new hopes will arise. ( )1. A. younger ( )2. A. look for ( )3. A. alone ( )4. A. hands ( )5. A. went up ( )6. A. what ( )7. A. instead ( )8. A. staying ( )9. A. where ( )10. A. Because ( )11. A. were ordered ( )12. A. poor ( )13. A. all ( )14. A. give up ( )15. A. sick B. young B. look at B. lonely B. arms B. brought up B. how B. too B. leaving B. which B. Though B. were warned B. lucky B. either B. fight with B. ill C. elder C. look after of C. along C. toes C. grew up C. where C. either C. saying C. when C. As C. were asked C. worried C. both C. escape from C. strong D. older D. take care ofD. behind D. legs D. gave up D. which D. neither D. waiting D. who D. For D. were said D. unlucky D. none D. go over D. hard 查看答案
题型:单项选择题 如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是( )A.I= ,从上向下B.I= ,从上向下C.I= ,从下向上D.I= ,从下向上 查看答案