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【单选题】
7. This week, the _______ seems to change every day: one day is hot; the next day is cold. A. time B. weather C. season D. way
A. A
B. B
C. C
D. D
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答案
B
解析
B
相关试题
【单选题】
8. He never does his work _______ Mary.    A. as careful as B. so careful as C. carefully as D. as carefully as
A. A
B. B
C. C
D. D
【单选题】
9. — Can he jump high? — Yes, he ______. He is a good high jumper. A. must B. need C. can D. shall
A. A
B. B
C. C
D. D
【单选题】
10. The shop _____ at 8:00 a.m.and it ________ for ten hours every day. A. is open; has opened B. is opened; opens C. opens; is open D. opened; opens
A. A
B. B
C. C
D. D
【单选题】
11. —Excuse me, may I use your bicycle? ______ is broken. —Certainly. But remember to return it before lunch. A. Mine B. Me C. Myself D. I
A. A
B. B
C. C
D. D
【单选题】
12. —Simon, what do I need to take for the hiking? —You’d better ________ more water than usual. It’s hot today. A. to take B. taking C. take D. took
A. A
B. B
C. C
D. D
【单选题】
13. Helen ______ to a language school when she was seven. A. sent B. is sent C. will send D. was sent
A. A
B. B
C. C
D. D
【单选题】
14. — Is this park you’ve visited recently? — Yes, it's the most beautiful one I’ve ever visited before. A. that B. the one C. which D. the one which
A. A
B. B
C. C
D. D
【单选题】
15. — It’s difficult for the village children to cross the river for school. — I think a bridge ________ over the river. A. should be built B. is being built C. has been built D. was built
A. A
B. B
C. C
D. D
【单选题】
16. — Could you tell me when Mr. Li ________ in Huaibei?    — Sure..When he ________, I’ll call you.    A. arrives; will arrive B. will arrive; will arrive C. arrives; arrives D. will arrive; arrives
A. A
B. B
C. C
D. D
【单选题】
) 17.There is ________ 800-metre-long road behind ________ hospital. A. an; an B. an; the C. a; a D. a; the
A. A
B. B
C. C
D. D
【单选题】
18. — Did you see a girl in yellow pass by just now? — No, sir. I ________ a magazine. A. read B. am reading C. was reading D. would read
A. A
B. B
C. C
D. D
【单选题】
19.In fact, my parents are not only kind to me, but also strict ________ me. A. at B. to C. for D. with
A. A
B. B
C. C
D. D
【单选题】
20. The boy_____ a yellow sweater can_____ himself now. A. wearing; dress B. putting on; wear C. put on; dress D. dressing; wear
A. A
B. B
C. C
D. D
【单选题】
21. —Jack, I haven’t seen your brother for a long time. — He ________Shanghai on business for two months. A. went to B. has gone to C. has been in D. has been to
A. A
B. B
C. C
D. D
【单选题】
22. The meat with eggs tastes ______. Would you like some more? A. nice B. well C. bad D. wonderfully
A. A
B. B
C. C
D. D
【单选题】
23. — Look! The man standing at the gate ______ be our headmaster. — No, it _______ be him.He is holding a meeting in the office now. A. must; can’t B. must; mustn’t C. can’t; can’t D. can’t; mustn’t
A. A
B. B
C. C
D. D
【单选题】
24. The Japanese government must do everything ________ polluted water from running into rivers, lakes, seas and oceans. A. keep B. kept C. Keeping D. to keep
A. A
B. B
C. C
D. D
【单选题】
25. —Hi, Jack.Did you go to Jim’s birthday party? —No, I felt so sad.I . A. didn’t invite B. am not invited C. wasn’t invited D. hadn’t invited
A. A
B. B
C. C
D. D
【单选题】
( ) 26. Where does the writer of "The little Prince" come from? A.England. B.France. C.America. D.China.
A. A
B. B
C. C
D. D
【单选题】
( ) 27. What does the prince do after the fox tells him a secret? A.He cares more about a flower and a sheep. B.He meets many more strange adults on other planets. C.He realizes his love for the rose and he goes back to his planet.   D.He discovers interesting things such as a snake, other roses and a fox.
A. A
B. B
C. C
D. D
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________. A.the adult world B.the planet B -612 C.a rose and a fox D.the adventure of a young prince
A. A
B. B
C. C
D. D
【单选题】
( ) 29. What is the writer's main purpose(目的)in writing this passage?    A.To tell the readers his life story.    B.To tell people what kind of person his father was.    C.To tell the readers what present he got from his father.    D. To let people know how poor he was.
A. A
B. B
C. C
D. D
【单选题】
( )30 Why did the father not ask his son not to do this and do that?    A.Because he felt quite confident of his son.    B.Because he was born from a poor family.    C.Because he was a man of few words.    D.Because he didn't want to be much too strict with his son.
A. A
B. B
C. C
D. D
【单选题】
( ) 31. What would someone learn from this passage?    A.How to live by oneself. B.How to stand on one's own feet.    C.What a good father should do. D.What the self-important is like.
A. A
B. B
C. C
D. D
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage?    A.闲暇时光 B.学费 C.精神空虚 D.经济不足
A. A
B. B
C. C
D. D
【单选题】
( ) 33. It’s good for children to ________ on the Internet. A. give password to others B. go into a chat room as they’d like to C. give out a credit card number D. get useful knowledge and information
A. A
B. B
C. C
D. D
【单选题】
( ) 34. The underlined phrase “leak out” in the third paragraph may mean “________.” A. give away B. give out C. leave out D. put away
A. A
B. B
C. C
D. D
【单选题】
( ) 35.If your parents don’t agree, never ________. A. read anything on the Internet B. relax in your free time C. have a face-to face meeting with anyone you met online D. treat other people as you’d like to be treated
A. A
B. B
C. C
D. D
【单选题】
( ) 36. This passage is mainly about “________”. A. Internet Safety Rules B. Surfing on the Internet C. Information on the Internet D. How to use Computers
A. A
B. B
C. C
D. D
【单选题】
( ) 37. When was canned food invented? A. In 1870.          B. In 1810. C. In 1902.          D. In 1926.
A. A
B. B
C. C
D. D
【单选题】
( ) 38. After the trip to the Arctic, Clarence Birdseye invented ____________. A. canned food             B. can openers C. frozen food           D. air conditioning
A. A
B. B
C. C
D. D
【单选题】
( ) 39 Changes in weather _____________ in Willis Carrier's company. A. helped to keep food           B. made rooms comfortable C. caused health problems        D. hurt printing paper
A. A
B. B
C. C
D. D
【单选题】
( ) 40. According to the passage, which of the following may lead to inventions? A. People's needs.             B. Public support. C. Modern technology.          D. Practical suggestions.
A. A
B. B
C. C
D. D
【单选题】
1、下列词语中,读音全都正确的一组是( )  A. 箴(jiān)言 璀璨(càn) 分泌(mì) 饮鸩(jiū)止渴  B. 堵塞(sāi) 憧(chōng)憬 宝藏(cáng) 未雨绸缪(móu)  C. 缜(zhěn)密 省(xǐng)悟 弹劾(hé) 瞠(chēng)目结舌  D. 果脯(fǔ) 处(chù)罚 提(tí)防 草菅(jiān)人命
A. A
B. B
C. C
D. D
【单选题】
、下列词语中加点的字的读音完全相同的一项是( ) A. 缉私  编辑  舟楫   开门揖盗   疾恶如仇  B. 奴婢  裨益  麻痹   惩前毖后 刚愎自用  C. 强劲  颈椎  劲头  泾渭分明 不胫而走  D. 船舷  炫耀  弦乐 头晕目眩 煊赫一时
A. A
B. B
C. C
D. D
【单选题】
下列词语中带括号的字的读音,全都不相同的一组是( ) A.(樟)脑 (章)程 (獐)头鼠目 欲盖弥(彰) B.(削)皮 (消)耗 形(销)骨立 (逍)遥法外 C.(感)动 呐(喊) (咸)与维新 不胜遗(憾) D. 官(僚) (撩)拨 青面(獠)牙 星火(燎)原
A. A
B. B
C. C
D. D
【单选题】
下列各组词语中字的读音,全都正确的一项是( ) A. 羞涩(sè)    踱(dù)步    参(cēn)差不齐  B. 袅娜(nà)   煤屑(xiè)  蓊蓊(wěng)郁郁 C. 倩(qiān)影  缕缕(lǚ)   脉脉(mài)含情   D. 独处(chǔ)   颤(chàn)动    酣(hān)然入梦
A. A
B. B
C. C
D. D
【单选题】
下列词语中加点字的读音,全都不相同的一组是( ) A. 苗圃 逮捕    哺育 铺面 B. 侥幸 皎洁  缴纳 蹊跷 C. 仿效 旋转  旖旎 旅行 D. 机械 告诫  押解 拮据
A. A
B. B
C. C
D. D
【单选题】
下列词语中加点的字,读音全都相同的一项是( ) A. 螳臂当车 庇护 凋敝 筚路蓝缕 B. 蒙头转向 牛虻 懵懂 故态复萌 C. 欲盖弥彰 奢靡 静谧 风靡一时 D. 经年累月 蓓蕾 羸弱 光明磊落
A. A
B. B
C. C
D. D
【单选题】
下列各组成语中,有错别字的一项是( )  A. 山青水秀 磨拳擦掌 大声疾呼 苦心孤诣  B. 出类拔萃 防微杜渐 再接再厉 天网恢恢  C. 言简意赅 因地制宜 强弩之末 萍水相逢  D. 永葆青春 变幻莫测 孤注一掷 余勇可贾
A. A
B. B
C. C
D. D
推荐试题
【单选题】
碳二加氢反应后干燥器主要脱除的水来自___。
A. CO和H2反应生成的水
B. 裂解过程产生的水
C. 乙炔和H2反应生成水
D. 原料中带来的水
【单选题】
预脱甲烷塔T-302塔釜再沸器用___加热,塔顶气体经E-321后,气相去( D )。
A. CW
B. 丙烯
C. T-401
D. T-301
【单选题】
在甲烷化开车过程中,将___引入系统做为升温介质,当温度达到( D )℃,开始微开H2阀门,将H2引入反应器内、
A. N2
B. H2
C. 130℃
D. 150℃
【单选题】
脱甲烷塔T-301在一定温度、压力条件下,塔顶尾气中乙烯含量随H2与CH4分子比的增大而___。
A. 减少
B. 增大
C. 不变
D. 都不是
【单选题】
甲烷化反应的方程式为___。
A. H2 + CO → CH4 + H2O
B. H2 + CH4 →CO + H2O
C. 3H2 + CO→ CH4 + H2O
D. H2 + CO2 → CH4 + H2O
【单选题】
R-401反应器中生成的绿油是___的低聚物。
A. 甲基乙炔
B. 乙炔、乙烯
C. 丙二烯
D. 甲烷
【单选题】
甲醇在分离单元可以作为___,吸入人体后会损害人的中枢神经系统
A. 解冻剂
B. 防腐剂
C. 阻聚剂
D. 缓蚀剂
【单选题】
关于冷箱中流体甲烷的节流膨胀,下列说法正确的是 ___。
A. 等焓膨胀,压力降越大,节流后温度越高
B. 等焓膨胀,压力降越大,节流后温度越低
C. 等熵膨胀,压力降越大,节流后温度越高
D. 等熵膨胀,压力降越大,节流后温度越低
【单选题】
甲烷化R-301的目的是为了脱除氢气中的CO,因为CO是许多___的毒物。
A. 氧化剂
B. 干燥剂
C. 催化剂
D. 缓蚀剂
【单选题】
回流量与采出量之比称为___。
A. 回流指数
B. 采出比
C. 回流比
D. 进料比
【单选题】
关于回流比对精馏操作的影响,下列说法正确的是___。
A. 回流比越大越好
B. 回流比越小越好
C. 回流比的大小对精馏塔的影响较小
D. 正常操作下,回流比要相对稳定
【单选题】
有关乙烯损失的说法正确的是___。
A. 脱甲烷塔中氢/甲烷越大,乙烯损失越大
B. 脱甲烷塔中氢/甲烷越小,乙烯损失越大
C. 冷箱节流效果越好,乙烯损失越大
D. 脱甲烷塔灵敏板温度越低乙烯损失越大
【单选题】
冷泵启动前一定要先确认___。
A. 气液相预冷合格
B. 氮气置换合格
C. 实气置换合格
D. 冷却水是否畅通
【单选题】
下列的叙述中,正确的是___
A. 分子量相同的物质就是同一种物质
B. 分子式相同的不同物质一定是同分异构体
C. 通式相同的不同物质一定是同系物
D. 官能团不同,分子结构不同的物质互为同分异构体
【单选题】
节系统称为___。
A. 串级调节
B. 比例调节
C. 分程调节
D. 均匀调节
【单选题】
由于流体在导管横截面上各点的流速并不相同,越接近管中心处流速___,越接近管壁处流速( A )。
A. 越大越小
B. 越小越大
C. 越小越小
D. 越大越大
【单选题】
氢气产品中乙炔含量应小于___
A. 1PPM(mol)
B. 5 PPM(mol)
C. 10 PPM(mol)
D. 20 PPM(mol)
【单选题】
R-401床层温度SD-1联锁值为___℃
A. 100℃
B. 80℃
C. 60℃
D. 120℃
【单选题】
精馏塔在全回流时,其回流比为___。
A. 1
B. 10
C. 100
D. 无穷大
【单选题】
精馏塔在全回流时,其采出比为___。
A. 0
B. 10
C. 101
D. 无穷大
【单选题】
裂解气再生是利用干燥剂在___的原理。
A. 在高温低压下释放水分
B. 低温高压下吸附水分
C. 高温高压下吸附水分
D. 在低温高压下释放水分
【单选题】
精馏塔塔压联锁的原因是___。
A. 加热量提得太快
B. 回流量太大
C. 进料量增大
D. 塔釜采出量太少
【单选题】
影响脱甲烷塔乙烯收率的重要因素是,操作温度和压力、___
A. 甲烷/氢比
B. 塔顶冷剂
C. 灵敏板温度
D. 进料中甲烷量
【单选题】
控制高压甲烷中乙烯含量的目的不包括___
A. 保证甲烷产品质量
B. 减小乙烯损失
C. 提高乙烯收率
D. 降低冷箱温度
【单选题】
脱丁烷塔T-405在___停车
A. 热区停车前
B. 丙烯精馏塔停车后
C. 低压脱丙烷塔停车后
D. 低压脱丙烷塔停车前
【单选题】
设备倒空的先后顺序为___
A. 先泄压,后排液
B. 先倒液,后泄压
C. 泄压倒液同时进行
D. 无先后次序
【单选题】
屏蔽泵启动时候,其出入口阀的状态为___
A. 入口开,出口关
B. 入口开,出口开
C. 入口关,出口关
D. 入口开,出口稍开
【单选题】
精馏塔开车的过程中,首先要稳定的参数是___
A. 塔压
B. 塔顶温
C. 进料
D. 灵敏板温度
【单选题】
脱丁烷塔T-405塔釜再沸器的切换,出现塔釜液位下降过快,可能出现的原因是___
A. 气相开的太快
B. 气相阀开得太大
C. 液相阀开得太快
D. 液相阀开得太大
【单选题】
下列选项中,属于阻聚剂泵不上量的原因是___
A. 冲程太大
B. 泵入口过滤网堵塞
C. 泵油位过高
D. 阻聚剂罐位设定过高
【单选题】
精馏塔出现冻塔后,下列描述正确的是___
A. 塔压差高
B. 塔温度分部正常
C. 回流罐液位稳定
D. 塔釜液位稳定
【单选题】
脱乙烷塔T-401塔底再沸器加热介质___
A. 盘油
B. 急冷水
C. 丙烯
D. 低压饱和蒸汽
【单选题】
预脱甲烷塔T-302塔底再沸器加热介质___
A. 盘油
B. 急冷水
C. 丙烯
D. 低压饱和蒸汽
【单选题】
高压脱丙烷塔T-201塔底再沸器加热介质___
A. 盘油
B. 急冷水
C. 丙烯
D. 低压饱和蒸汽
【单选题】
脱丁烷塔T-405塔底再沸器加热介质___
A. 盘油
B. 急冷水
C. 丙烯
D. 低压饱和蒸汽
【单选题】
分离岗位塔板数最多,回流比最大的塔是___。
A. 脱甲烷塔
B. 乙烯精馏塔
C. 丙烯精馏塔
D. 脱丙烷塔
【单选题】
甲烷化反应器R-301如果操作暂时中断时应保证床层温度不低于___℃,防止在低温下剧毒的羰基镍产生。
A. 130
B. 140
C. 150
D. 160
【单选题】
碳二加氢反应器R-201SD-1联锁报警值___℃。
A. 20
B. 30
C. 40
D. 50
【单选题】
碳二加氢反应器R-201SD-1联锁值___℃。
A. 50
B. 60
C. 70
D. 80
【单选题】
乙烯装置使用氮气纯度为___。
A. 90.0%(体)
B. 95%(体)
C. 99.5%(体)
D. 99.9%(体)
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