题目: 技术进步与经济增长的关系 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0718/7d36a85f0724188de7e379c5e760661d.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:完形填空 完形填空。 Have you ever planted a few trees on Tree Planting Day? Each year, millions of people, both 1 , plant alot of trees. But this may not be the best way to make your home a 2 place. Last week we visited a park in Hebei. We were 3 to find most of the trees had been burned. The workerstold us that the trees 4 soon after they were planted because they weren't watered well enough. 5 workersburned them and cleaned the place for 6 trees to be planted this year. 7 a card found in one of the dead trees, a student wrote:"I hope this tree will grow up with me to 8 the backbone (栋梁) of our country." The workers said that the survival (存活) of the trees was really more important than 9 trees were planted. Some people in Beijing now have a new idea that they can donate (损赠) some money and let professionals(专业人士) plant and 10 the trees. ( )1. A. students and teachers ( )2. A. smaller ( )3. A. pleased ( )4. A. died ( )5. A. Though ( )6. A. few ( )7. A. Over ( )8. A. need ( )9. A. how many ( )10. A. take out B. old and young B. colder B. happy B. grew B. When B. old B. From B. hold B. when B. take down C. boys and girls C. warmer C. surprised C. bought C. So C. new C. On C. be C. how soon C. take care of 查看答案
题型:选择题 下列反应属于取代反应的是( )A.CH3CH3+Cl2CH3CH2Cl+HClB.H2C=CH2+HCl→H3C-CH2ClC.2CH3CH2OH+O22CH3CHO+2H2OD.2C6H6+15O212CO2+6H2O 查看答案
题型:多项选择题 添加抗氧化剂的油品维护和监督的内容有()。A.定期测定油中抗氧化剂含量,必要时进行油的抗氧化安定性试验B.如补加不含抗氧化剂油时,应同时补加足量添加剂C.大修时,若发现大量油泥和沉淀物应加以分析,查找原因D.热虹吸器与变压器同时运行E.注意吸附剂的更换 查看答案