【单选题】
53.某有色溶液,用1cm比色皿,选波长为520nm,测得其吸光度为0.150;其他条件不变,若改用2cm比色皿,测得的吸光度为( )。
(A)0.075;(B)0.175;(C)0.450;(D)0.300
A. 0.075
B. 0.175
C. 0.450
D. 0.300
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【单选题】
54.电流式分析仪器的发送器能把被测物质浓度变化转换为( )。
(A)电压;(B)电流;(C)电阻;(D)电导。
【单选题】
55.给水中加氨的目的是( )。
(A)调节给水pH值为8.8-9.3,防止钢铁腐蚀;
(B)防止钢腐蚀;(C)除氧;(D)防止铜腐蚀。
A. 调节给水pH值为8.8-9.3,防止钢铁腐蚀
B. 防止钢腐蚀
C. 除氧
D. 防止铜腐蚀
【单选题】
56.选用联氨或氨液保护停(备)用锅炉,启动时蒸汽中氨含量少于()时,方可并汽。
(A)2.0mg/L;(B)4.0mg/L;
(C)6.0mg/L;(D)8.0mg/L。
A. 2.0mg/L
B. 4.0mg/L
C. 6.0mg/L
D. 8.0mg/L
【单选题】
57.某电厂汽包炉按计划大修停炉,应选择( )保护。
(A)氨液法;(B)充氮法;(C)气相缓蚀剂法;(D)烘干法。
A. 氨液法
B. 充氮法
C. 气相缓蚀剂法
D. 烘干法
【单选题】
58.酸性铬兰K对( )离子的灵敏度比铬黑T高。
(A)Ca2+;(B)Mg2+;(C)Zn2+;(D)Cu2+。
A. Ca2+
B. Mg2+
C. Zn2+
D. Cu2+
【单选题】
59.在双层床中,胶体硅最易析出的部分是( )。
(A)强酸树脂层;(B)弱酸树脂层;
(C)强碱树脂层;(D)弱碱树脂层。
A. 强酸树脂层
B. 弱酸树脂层
C. 强碱树脂层
D. 弱碱树脂层
【单选题】
60.在单元制一级除盐系统中,如果发现阴床出水的pH值突然降低,含硅量上升,电导率先下降而后又急骤上升,说明( )。
(A)阴、阳床都已失效;(B)阴床失效、阳床未失效
(C)阴、阳床都未失效;(D)阳床失效、阴床未失效。
A. 阴、阳床都已失效
B. 阴床失效,阳床未失效
C. 阴、阳床都未失效
D. 阳床失效、阴床未失效
【单选题】
61.以下树脂中,( )树脂最容易发生化学降解而产生胶溶现象。
(A)强酸性;(B)弱酸性;(C)强碱性;(D)弱碱性。
A. 强酸性
B. 弱酸性
C. 强碱性
D. 弱碱性
【单选题】
62.弱碱性阴离子交换树脂在pH值( )的范围内才具有较好的交换能力。
(A)0-7;(B)7-14;(C)1-14。
【单选题】
63.在高压炉蒸汽系统中,沉积在高压锅炉过热器中的盐类主要是( )。
(A)NaCl;(B)Na2SiO3;(C)Na2SO4;(D)Na3PO4。
A. NaCl
B. Na2SiO3
C. Na2SO4
D. Na3PO4
【单选题】
64.电磁过滤器在进行凝结水除铁处理时,若在凝结水中加入联氨,则更能提高电磁过滤器的处理效果,原因是( )。
(A)联氨能除去水中部分溶解氧;(B)联氨能将铁的高价腐蚀产物还原为低价;
(C)联氨能提高电磁过滤器的磁性;(D)联氨能将铁的低价腐蚀产物还原为高价。
A. 联氨能除去水中部分溶解氧
B. 联氨能将铁的高价腐蚀产物还原成低价
C. 联氨能提高电磁过滤器的磁性
D. 联氨能将铁的低价腐蚀产物还原成高价
【单选题】
65.弱酸性阳树脂再生用H2SO4作再生剂时,再生溶液的浓度应控制在( )。
(A)0.5%-1.0%;(B)1.0%-1.5%;(C)2%-3%;(D)4%-5%。
A. 0.5%-1.0%
B. 1.0%-1.5%
C. 2%-3%
D. 4%-5%
【单选题】
66.受氯气中毒较重者应( )。
(A)口服复方樟脑酊;(B)胸部用冷湿敷法救护;(C)吸氧气;(D)施行人工呼吸。
A. 口服复方樟脑酊
B. 胸部用冷湿敷法救护
C. 吸氧气
D. 施行人工呼吸
【单选题】
67.生产厂房内外工作场所的常用照明应该保证有足够的( )。
(A)数量;(B)亮度;(C)手电筒;(D)应急灯。
A. 数量
B. 亮度
C. 手电筒
D. 应急灯
【单选题】
68.热力机械工作票中的工作许可人一般由( )担任。
(A)运行副主任;(B)运行专职工程师;
(C)运行正副班长;(D)检修正副班长。
A. 运行副主任
B. 运行专职工程师
C. 运行正副班长
D. 检验正副班长
【单选题】
69.搬运和使用硫酸或强碱性药品的工作人员,应熟悉药品的( )。
(A)规格;(B)用途;(C)性质和操作方法;
(D)安全措施。
A. 规格
B. 用途
C. 性质和操作方法
D. 安全措施
【单选题】
70.凝汽器内蒸汽的凝结过程可以看做是( )。
(A)等容过程;(B)等焓过程;(C)等压过程;(D)绝热过程。
A. 等容过程
B. 等焓过程
C. 等压过程
D. 绝热过程
【单选题】
71.已知介质的压力p和温度T,在该压力下,当T<T饱时,介质所处的状态是( )。
(A)饱和水;(B)未饱和水;(C)饱和蒸汽;(D)过热蒸汽。
A. 饱和水
B. 未饱和水
C. 饱和蒸汽
D. 过热蒸汽
【单选题】
72.已知介质的压力p和温度T,在该温度下,当p<p饱时,介质所处的状态是( )。
(A)未饱和水;(B)饱和水;(C)湿蒸汽;(D)过热蒸汽。
A. 未饱和水
B. 饱和水
C. 湿蒸汽
D. 过热蒸汽
【单选题】
73.确定电流通过导体时所产生的热量与电流的平方、导体的电阻及通过的时间成正比的定律是( )。
(A)欧姆定律;(B)基尔霍夫定律;
(C)焦尔楞次定律;(D)亨利定律。
A. 欧姆定律
B. 基尔霍夫定律
C. 焦耳楞次定律
D. 亨利定律
【单选题】
74.图11-011-1所示电路的电阻为( )Ω。
(A)2;(B)4;(C)5;(D)31。
【单选题】
75.锅炉水冷壁管结垢后可造成( )。
(A)传热增强,管壁温度升高;(B)传热减弱,管璧温度降低;(C)传热增强,管壁温度降低;(D)传热减弱,管壁温度升高
A. 传热增强,管壁温度升高
B. 传热减弱,管壁温度降低
C. 传热增强,管壁温度降低
D. 传热减弱,管壁温度升高
【单选题】
76.溶液的物质的量浓度是指( )。
(A) 1ml溶液中所含某物质的量;(B) 1g溶液申所含某物质的量;(C) 1L溶液中所含某物质的量;(D) 1000g溶液中所含某物质的量。
A. 1ml溶液中所含某物质的量
B. 1g溶液中所含某物质的量
C. 1L溶液中所含某物质的量
D. 1000g溶液中所含某物质的量
【单选题】
77.强碱滴定弱酸时,应选用( )指示剂。
(A)酚酞; (B)甲基橙; (C)甲基红; (D)百里酚酞。
A. 酚酞
B. 甲基橙
C. 甲基红
D. 百里酚酞
【单选题】
78. Cu+2H2SO4(浓)=CuSO4+SO2↑+2H2O;3Cu+ 8HNO3(稀)= 3Cu(NO3)2+2NO↑+4H2O;根据以上两个反应,说明硫酸和硝酸具有( )
(A)和金属起置换反应的性质;(B)还原性;(C)强烈的氧化性;(D)剧烈的腐蚀性。
A. 和金属起置换反应的性质
B. 还原性
C. 强烈的氧化性
D. 剧烈的腐蚀性
【单选题】
79.如果测出澄清器的容积利用系数为80%,则实际流经时间必然( )理论值。
(A)大于; (B)小于; (C)等于。
【单选题】
80.循环冷却水系统的凝汽器中的铜管,易结碳酸钙垢的部位是( )。
(A)入口段; (B) 中间段; (C) 出口段。
【单选题】
81.NWT处理水化学工况是在高纯水中加人适量的氧或过氧化氢,在( ) 条件下,使钢材表面生成保护膜。
(A)碱性; (B)酸性; (C)弱酸性; (D) 中性。
【单选题】
82.弱酸阳离子交换树脂由钠型转化为氢型时,其体积约增大( )%。
(A) 20; (B) 40; (C) 60; (D) 80。
【单选题】
83.在水流经过滤池的过程中,对水流均匀性影响最大的是( )。
(A)滤层高度; (B)排水系统; (C)入口装置。
【单选题】
84.为便于阴、阳树脂分层,混床用的阳树脂与阴树脂的湿真密度差应大于( )% 。
(A) 5-10; (B) 10-15; (C) 15-20; (D) 20-25。
A. 5-10
B. 10-15
C. 15-20
D. 20-25
【单选题】
85.为防止有机物对凝胶型强碱阴树脂的污染,要求进水耗氧量小于( ) mg/L。
(A) 0.5; (B) 1.0; (C) 1.5; (D) 2.0。
A. 0.5
B. 1.0
C. 1.5
D. 2.0
【单选题】
86.浮动床对树脂粒度一般要求在( ) mm。
(A) 0.35-1.25;(B) 0.6-1.2;(C) 0.4-0.8;(D) 0.8-1.25
A. 0.35-1.25
B. 0.6-1.2
C. 0.4-0.8
D. 0.8-1.25
【单选题】
87.逆流再生固定床在再生过程中,为防止树脂乱层,从交换器顶部送入压缩空气,气压应维持在( ) MPa。 (A) 0-0.03;(B) 0.03-0.05;
(C) 0.06-0.08;(D) > 0.08。
A. 0-0.03
B. 0.03-0.05
C. 0.06-0.08
D. >0.08
【单选题】
88.逆流再生离子交换器与顺流再生离子交换器,在结构上的主要区别是( )。
(A)有压脂层;(B) 有中间排液装置;(C)有压缩空气顶压;(D)有水顶压。
A. 有压脂层
B. 有中间排液装置
C. 有压缩空气顶压
D. 有水顶压
【单选题】
89.浮动床再生比耗一般为( )。
(A) 1.1-1.4;(B) 1.4-1.8;(C) 1.8-2.2;(D) 2.2-2.5。
A. 1.1-1.4
B. 1.4-1.8
C. 1.8-2.2
D. 2.2-2.5
【单选题】
90.电力生产的指导方针是( )。
(A)安全第一;(B)降低成本;(C)降低煤耗;(D)继续发展。
A. 安全第一
B. 降低成本
C. 降低煤耗
D. 继续发展
【单选题】
91.电厂中的变压器主要起( )的作用。
(A)升高电压;(B)降低电压;(C)电压转换;(D) 分配电压。
A. 升高电压
B. 降低电压
C. 电压转换
D. 分配电压
【单选题】
92.经氢离子交换,25℃时,给水电导率达0.5uS/cm时,若( )h内没查明原因,给水水质继续恶化,则应停止机组运行。
(A) 12; (B) 24; (C) 36; (D) 48.
【单选题】
93.火力发电厂生产过程中,水主要起( )的作用。
(A)冷却; (B)冲洗; (C)冲洗和冷却; (D)传热和冷却。
A. 冷却
B. 冲洗
C. 冲洗和冷却
D. 传热和冷却
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【单选题】
9.—Well do what we can ____English well this term.
—It’s high time for you to work hard.
A. study B.to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
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12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
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13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
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14. We will have a _________ holiday after the exam.
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015.
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary.I hope it will help you in some way.
— Thank you.It’s ________ what I need.
A. almost B. still C. only D. just
【单选题】
17. —Oh.I’m hungry.Mum, can I have the hamburger on the plate?
—No.It tastes .
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years.
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend.
—________.
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A.England. B.France. C.America. D.China.
【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
【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
【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.
【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.
【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.
【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
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
【单选题】
) 1. Even Tony’s six-year-old son asked him ______ smoking.
A. stops B. stopped C. to stop D. stopping
【单选题】
2.—What do you think of the lecture of Li Yang’s Crazy English?
— I think it’s _______ , but someone thinks it’s much too ________.
A. wonderful enough; bored B. enough wonderful; boring
C. enough wonderful; bored D. wonderful enough; boring
【单选题】
3.—He didn’t go to the lecture this morning, did he?
— _____ .Though he was not feeling very well.
A. No, he didnt B. Yes; he did C. No, he did D. Yes, he didnt
【单选题】
4. If you read a lot, your life ______ full of pleasure.
A. will be B. is C. be D. was
【单选题】
5. The black bag _________ be Annas. She has a blue one.
A. should B. cant C. wouldnt D. could
【单选题】
6. Susan, why are you still here? They are all ready to start.
Im sorry, but I _________ when to start.
A. dont tell B. wasnt told C. didnt tell D. havent told
【单选题】
7.—Why dont you choose the red tie?
—For me, it doesn’t _____ my shirt very well.
A. fix B. accept C. compare D. match
【单选题】
8. — Could you tell me ______? I must find him.
— Sorry.I don’t know.But he was here just now.
A. where Tom was B. where Tom is
C. where has Tom gone D. where can I find Tom