溶剂再生塔发生冲塔的原因中,最严重的是()。A、重沸器加热蒸汽量过大,导致塔底温度超 发布时间:2019-10-29 17:01 │ 来源:www.tikuol.com 题型:单项选择题 问题: 溶剂再生塔发生冲塔的原因中,最严重的是()。A、重沸器加热蒸汽量过大,导致塔底温度超高,气相负荷过大B、塔底液面波动大C、压控失灵,波动过大D、溶剂发泡
题型:单项选择题 用四舍五入法按要求对0.05019分别取近似值,其中错误的是[ ]A.0.1(精确到0.1)B.0.05(精确到百分位) C.0.05(保留两个有效数字)D.0.0502(精确到0.0001) 查看答案
题型:单项选择题 完形填空。 As a teenager, I felt I was always letting people down. I was rebellious (反叛的) outside, 1 on the inside, I wanted people to 2 me. Once I left home to hitchhike (搭便车) to California with my friend Penelope. The trip wasn't 3 , and there were many times I didn't feel safe. One situation in particular 4 me grateful to still be alive. When Ireturned home, I was different, not so outwardly sure of myself. I was happy to be home. But then I noticed that Penelope, who was 5 with us, was wearing my clothes. And my 6 seemed to like her better than me. I wondered if I would be 7 if I weren't there. I told my mom, and she explained that 8 Penelope was a lovely girl, no one could 9 me. I pointed out, "She is more patient and is neater than I have ever been." My mom said these were wonderful 10 , but I was the only person whocould fill my 11 . She made me realize that even with my 12 -and there were many-I was a loved member of the family who couldn't be replaced. I became a searcher, wanting to 13 who I was and what made me unique. My 14 of myself was changing.I wanted a solid base to start from. I started to resist pressure to 15 in ways that I didn't like any more, and I was 16 by who I really was. I came to feel much more 17 that no one can ever take my place. Each of us 18 a unique place in the world. You are special, no matter what others say or what you maythink. So 19 about being replaced. You 20 be. ( )1.A. and ( )2.A. leave ( )3.A. easy ( )4.A. succeeded ( )5.A. playing ( )6.A. family ( )7.A. loved ( )8.A. before ( )9.A. scold ( )10.A. qualities ( )11.A. character ( )12.A. faults ( )13.A. look for ( )14.A. picture ( )15.A. think ( )16.A. thankful ( )17.A. sure ( )18.A. carries ( )19.A. talk ( )20.A. mustn’t B. but B. respect B. hard B. kept B. eating B. friends B. mentioned B. after B. compare B. girls B. role B. advantagesB. look backB. view B. learn B. delighted B. doubtful B. catches B. forget B. shouldn’t C. as C. admire C. fun C. managed C. staying C. relatives C. cared C. though C. replace C. people C. task C. manners C. find out C. sense C. change C. disappointed C. happy C. seizes C. care C. can’t D. for D. like D. long D. remained D. running D. class D. missed D. unless D. match D. times D. job D. pities D. give up D. drawing D. act D. hopeful D. lonely D. holds D. argue D. needn’t 查看答案