【单选题】
对于特定的煤种，气化温度过低最先表现出的现象是___。
A. 氧/煤比低
B. 气化炉产汽量低
C. 渣水系统固含量高
D. 合成气中 CO2 含量低
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相关试题
【单选题】
下面哪一项不能作为气化炉内部温度的判断依据___。
A. 汽包的发汽量
B. 气化炉出口合成气的 CO2 含量
C. 渣的外观
D. 烧嘴循环水的量
【单选题】
某气化装置氧煤比是 0.85，煤流量是 50000kg/h，则氧流量是___kg/h。
A. 58824
B. 42500
C. 45000
D. 50000
【单选题】
煤中___的多少对煤的结渣情形起着重要作用，是个首要的影响因素。
A. 水分
B. 挥发分
C. 灰分
D. 固定碳
【单选题】
气化炉开工烧嘴使用的燃料、助燃剂分别使用的是___。
A. 天然气 氧气
B. 解析气 工厂风
C. 天然气 工厂风
D. 解析气 氧气
【单选题】
粉煤给料罐通气锥氮气量由流量控制器和差压控制器输出进行___后控制。
【单选题】
停车检修时，做法错误的是___。
A. 检修人员进入 N2 置换后的设备内时，需先用压缩风吹扫，检验气样合格后方可
B. 冬季停工时，水蒸汽线必须用压缩风吹扫排净积水
C. 冬季对某些无法将水排净的露天设备管线死角，必须把设备解体，排尽积水
D. 冬季停车时，水线导淋应打开排水，蒸汽导淋不用排水
【单选题】
仪表风中断后，气开阀（FC 阀）将___。
A. 打开
B. 关闭
C. 维持原来的位置
D. 处于中间位置
【单选题】
控制器由两个控制器串联连接组成，一个控制器的输出值作为另一个控制器的设定值，这类控制系统称为___系统。
A. 串级控制
B. 分程控制
C. 比值控制
D. 选择控制
【单选题】
串级控制系统的特点___。
A. 在系统结构上组成二个闭合回路
B. 主、副调节器串联，主调节器的输出作为副调节器的给定值
C. 在系统特性上，由于副回路的作用，有效地克服了滞后，可大大提高调节质量
D. 主、副回路协同工作，克服干扰能力强，可用于不同负荷和操作条件变化的场合
【单选题】
装置停仪表空气，主要现象不包括___。
A. 界区仪表空气压力低报警
B. FC阀全关，FO阀全开
C. FC阀全开，FO阀全关
D. 部分塔、罐的液位、压力波动
【单选题】
饱和蒸汽在同一压力下，经过过热器进一步吸收热量使其温度高于该压力下所对应的沸腾温度时，也就是（ ）不变，温度增高，此时的蒸汽即为过热蒸汽。___
【单选题】
由于变换反应是放热反应，适当降低温度有利于平衡向右移动，因此平衡常数随温度的降低而增大。当适当降低时，对于 CO 变换反应，CO 的含量___。
A. 降低
B. 升高
C. 不变
D. 先升后降
【单选题】
甲醇/水分离塔运用了精馏的原理。精馏是利用物质（ ）而将两种或两种以上的物质分离的过程。___
A. 沸点不同
B. 压力不同
C. 分子量不同
D. 密度不同
【单选题】
在甲醇热再生塔中用（ ）做气提介质，将溶解于甲醇中的 CO2、H2S、COS 全部解吸出来，达到富甲醇再生的目的。为了向硫磺回收装置提供合格的原料气，用易分离的甲醇蒸气做气提介质，是比较合理的。___
A. 低压氮气
B. 中压蒸汽
C. 甲醇蒸汽
D. 低压蒸汽
【单选题】
在装置建设期间，喷淋甲醇的喷嘴安装方向与变换气流动方向（ ）。___
A. 相反
B. 相同
C. 成 90°
D. 成 45°
【单选题】
二段入口分离罐 V2402 液位控制为（ ） 控制。___
A. 三取二
B. 三取中
C. 二取二
D. 二取一
【单选题】
在温度高时，由于气体分子的动能大，能被吸附剂表面分子引力束缚的分子就少，因而温度越高平衡吸附容量也就（ ）。___
A. 越大
B. 越小
C. 先变大后变小
D. 无影响
【单选题】
VPSA 单元均压降压过程，这是在吸附过程结束后，顺着吸附方向将塔内的较高压力的氢气放入其它已完成再生的较低压力吸附塔的过程，该过程不仅是降压过程，更是回收床层死空间（ ）的过程，本流程共包括了七次连续的均压降压过程，因而可保证氢气的充分回收。___
A. CO
B. H2
C. CH4
D. CO2
【单选题】
高压锅炉水经过 21FV00057 控制流量，进入V2101，该股水的作用是（ ）。___
A. 除去合成气携带的煤灰等杂质
B. 除去合成气中的 H2S
C. 除去合成气中的 NH3
D. 除去合成气中的 HCN
【单选题】
E2103 壳层的设计压力为（ ）MPa___。（ A ）
A. 4.8
B. 4.2
C. 3.8
D. 4.0
【单选题】
当 21 单元系统压差正常，E2103 出口温度 21TT00012 偏高时，21TV00012 将（ ）。___
A. 开大
B. 关小
C. 手动全开
D. 手动全关
【单选题】
E2107 的蒸汽侧压力控制为___.
A. 21PICA00026 单回路控制
B. 21PICA00026 串级控制
C. 21PICA00026 分程控制
【单选题】
净化装置废锅液位自动调节系统是___形式。
A. 单冲量调节
B. 复合调节
C. 三冲量调节
D. 分程调节
【单选题】
高压锅炉水经过 E2111 后分为两路，一路作为（ ），另外一路作为（ ）。___
A. T2101 洗涤水、T2401 洗涤水
B. R2102 入口补水，R2103 入口补水
C. V2101 洗涤水、水冷壁上水
D. 烧嘴冷却水罐补水、洗涤塔补水
【单选题】
低温甲醇洗装置冷区（指介质温度在 0℃以下）换热器冷、热介质投用的先后顺序是（ ）。___
A. 先投热介质，再投冷介质
B. 先投冷介质，再投热介质
C. 冷、热介质同时投
D. 只投冷介质，不投热介质
【单选题】
正常操作条件下，甲醇水分离塔塔底的温度为（ ）。___
A. 125℃
B. 135℃
C. 145℃
D. 155℃
【单选题】
粗合成气进 V2101 设置了三台安全阀，安全阀的定压值为（ ）。___
A. 3.8
B. 4.0
C. 4.2
D. 4.5
【单选题】
此流程，防止安全阀憋压起跳。___
A. 21HV00004
B. 21HV00024 后手阀
C. 21HV00024 与 21HV00024 前手阀
D. 以上均不正确
【单选题】
E2103 的压力控制方式为（ ）。___
A. 21PICA00012 单回路控制
B. 21PICA00026 单回路控制
C. 21PICA00012 分程控制
D. 21PICA00012 串级控制
【单选题】
变换气管线爆破时采用的介质为（ ）。___
A. 低压氮气
B. 中压氮气
C. 低压蒸汽
D. 工厂风或仪表风
【单选题】
变换单元 8.0Mpa 高压氮气共有（ ）个用户点。___
【单选题】
E2103 建立正常液位后，打开底部煮炉蒸汽手阀，引蒸汽煮炉升温，通过调节手阀开度控制炉水升温速度不大于（ ）℃/h，直至炉水至沸腾状态。___
【单选题】
装置气密时对于变换变换单元，高压区的最终气密压力为（ ），开工循环气系统的最终气密压力为()，工艺凝液回收系统系统的最终气密压力为（ ）。___
A. 3.0、1.5、0.6
B. 4.0、1.0、0.6
C. 3.0、1.5、0.3
D. 4.0、1.0、0.3
【单选题】
若导气后出现严重超温，原则上：通过 T-2101 后放火炬压控阀 21PV00027，降低系统压力至0.2~0.3Mpag。快速（ ），气化单元相应通过合成气放火炬控稳系统压力。___
A. 关小 21HV00006 直至全关
B. 开大 21TV00008 直至全开
C. 开大 21HV00006 直至全关
D. 关小 21TV00008 直至全开
【单选题】
体积含量≤（ ）、变换气温度 21TI00045≤40℃时，变换气可输送至酸性气脱除单元。___。
A. 0.8%（V）
B. 1.5%（V）
C. 2.0%（V）
D. 3.0%（V）
【单选题】
原始开车时，低温甲醇洗单元在（ ）时必须投用喷淋甲醇，当外操通知内操流程已经改好，内操则需将 22FV00004 调节其开度控制流量。___
A. 导气中
B. 导气后一小时
C. 导气前一小时
D. 导气后半小时
【单选题】
汽提段，当 T2205 的汽提段集液盘建立 70％液位后，确认（ ）关闭，按操作规程启动 P2206，向 T2201 建立液位。___
A. 22XV00009、22XV00011
B. 22XV00009、22XV00012
C. 22XV00009、22XV00012
D. 22XV00010、22XV00012
【单选题】
低温甲醇洗循环降温时，开始由于甲醇和液态丙烯之间温差较大，液态丙烯会被很快蒸发，此时控制阀保持手动状态，通过控制进深冷器的液态丙烯量来控制系统的降温速率，系统降温初期的降温速率不大于（ ）（参考 T2204 塔底温度 22TI00046）。深冷器进液态丙烯后注意及时调整C2401 工况。___
A. 2℃／h
B. 10℃／h
C. 15℃／h
D. 20℃／h
【单选题】
低温甲醇洗循环降温时，为防止 T2204 塔底出口甲醇温度低至 E2218、T2205 最低设计温度 2℃，在投用丙烯深冷器之后，及时投用（ ），打开22FV00018，使低压蒸汽进入 E2227。调整 22FV00018开度，通过控制进入 E2227 的蒸汽量来控制 T2205 塔底的甲醇温度在（ ）℃。___
A. E2227、120
B. E2228、105
C. E2227、105
D. E2221、141.5
推荐试题
【单选题】
气能生津的机理是___
A. 气为生津的物质基础
B. 气为生津的动力
C. 气为生津的物质基础和动力
D. 气能化生精气
E. 气能生血，血能化津
【单选题】
血和津液生成的共同物质来源是___
A. 水谷精微
B. 宗气
C. 精
D. 元气
E. 营气
【单选题】
昼行于阳，夜行于阴的气是___
A. 营气
B. 卫气
C. 元气
D. 宗气
E. 肾气
【单选题】
“夺血者无汗”的生理基础是___
A. 肝肾同源
B. 乙类同源
C. 津血同源
D. 精血同源
E. 以上均不是
【单选题】
Q1: What does the man suggest that the woman do this weekend?___
A. Read J .K .Rowling's first book .
B. Go to buy a new Harry Potter book .
C. Watch BBC news about J .K .Rowling .
D. Take her cousin to see a new Harry Potter movie .
【单选题】
Q2: Where did J. K. Rowling come up with the idea for Harry Potter?___
A. At a cafe .
B. On a train .
C. At a cinema .
D. In a bookstore .
【单选题】
Q3: What are J. K. Rowling’s future plans?___
A. She won't write any more books .
B. She will write more magic stories .
C. She hasn't said anything about her future plans .
D. She said she would work on more serious subjects .
【单选题】
Q4: What are the two speakers mainly talking about?___
A. J.K. Rowling's secret .
B. J .K .Rowling's writing plan .
C. A new book by J .K.Rowling.
D. An interview with J .K .Rowling .
【单选题】
Q1: What happened when Stephen tried to remove a bottle of milk from the refrigerator?___
A. He broke the milk bottle .
B. He fell down on the floor .
C. He made a mess inside the refrigerator .
D. He spilled the milk over the kitchen floor .
【单选题】
Q2: What did Stephen’s mother do when she came into the kitchen？___
A. She gave him a long lecture .
B. She shouted at him in anger .
C. She enjoyed the wonderful mess .
D. She cleaned up the mess with him .
【单选题】
Q3: What did Stephen’s mother teach him later?___
A. How to do an experiment .
B. How to carry a milk bottle .
C. How to clean up spilled milk .
D. How to avoid making mistakes .
【单选题】
Q4: What did Stephen learn from this experience?___
A. Mistakes can become learning opportunities .
B. Mistakes are just like scientific experiments .
C. One should sometimes make mistakes .
D. One should try to avoid making mistakes .
【单选题】
Q1: Why is surfing the man’s favorite activity?___
A. Because he likes the sunny weather.
B. Because he wants to challenge himself .
C. Because it can help solve his sleeping problem .
D. Because it can help him forget all his troubles .
【单选题】
Q2: What is the woman going to do this weekend?___
A. To go sailing .
B. To go surfing .
C. To go to the beach .
D. To go to her nephew's .
【单选题】
Q3: What does the woman love doing?___
A. Going to visit relatives.
B. Enjoying the warm sun on the beach .
C. Building sand castles with her niece and nephew .
D. Playing in the sand and jumping in the waves .
【单选题】
Q4: What does the man remember doing with his brothers?___
A. Surfing in the sea .
B. Collecting seashells .
C. Building sand castles .
D. Jumping in the waves .
【单选题】
Q1: According to the survey, what percentage of British adults watched TV in theirfree time?___
A. 89 percent .
B. 84 percent .
C. 76 percent .
D. 71 percent .
【单选题】
Q2: Which age group would be the most likely to visit their friends and relatives?___
A. People aged 16 to 24
B. People aged 25 to 34 .
C. People aged 16 and over .
D. People aged 55 and over .
【单选题】
Q3: What does the speaker say about listening to music as a leisure activity for British people?___
A. People aged 16 to 24 preferred listening to music most .
B. It was getting more and more popular among the British people .
C. It was the third most popular activity among people aged 55 and over .
D. People aged 25 to 34 listened to music more often than those aged 16 to 24 .
【单选题】
Q4: According to the survey, how are leisure activities related to age?___
A. Older people go out to pubs more often . frequently .
B. Younger people go to the cinema less frequently.
C. Older people spend more time reading and gardening .
D. Younger people spend less time visiting friends and family .
【单选题】
Q1: Why was the girl excited?___
A. She is going to have a lot of vanilla ice cream .
B. She won the spelling competition at her school .
C. She is going to the state capital for a competition .
D. She "excellence"correctly,but others didn't .
【单选题】
Q2: What happened when the man was 13 years old?___
A. His family moved to Sacramento to settle down .
B. His family bought him a new suit and a new tie .
C. He went to Sacramento for a spelling competition .
D. He won the first prize in the state spelling competition .
【单选题】
Q3: Why did the man’s mom give him a big hug?___
A. To make him feel better after he lost the first prize .
B. To apologize for not buying him some ice cream .
C. To wish him good luck in the next competition .
D. To congratulate him on winning the first prize .
【单选题】
Q4: What color is the girl going to wear for her next competition?___
A. Red .
B. Blue .
C. Green .
D. Yellow .
【单选题】
Q1: What is this passage mainly about?___
A. Superstitions and science .
B. Tips on how to have good luck .
C. Superstitions in the United States .
D. Rational and superstitious societies .
【单选题】
Q2: According to the passage, what is considered as bad luck?___
A. Walking under a ladder .
B. Dreaming of a black cat .
C. Hanging a mirror in the house .
D. Stepping on one's own shadow .
【单选题】
Q3: Why is it considered bad luck to see a black cat crossing one’s path?___
A. Because black cats look like witches . e witches .
B. Because black cats were thought to be witches .
C. Because black cats bring seven years of bad luck .
D. Because black cats are hard to notice in darkness .
【单选题】
Q4: According to the passage, what will bring people good luck?___
A. Breaking a mirror on purpose .
B. Catching a falling leaf on one's birthday .
C. Finding a on the ground and picking it up .
D. Dreaming of blowing out the candles in one blow .
【单选题】
Q1: How long will the woman spend on her way to and from work by high-speed train?___
A. 4 hours .
B. 2 hours .
C. 1.5 hours .
D. 45 minutes .
【单选题】
Q2: When does the woman arrive back home by subway?___
A. At 8 .
B. At 7 .
C. At 6 .
D. At 5 .
【单选题】
Q3: According to the woman, in what way will the new high-speed train be a big help to her?___
A. She can either read or rest a little on the train .
B. She can read and respond to emails onthe train .
C. She can travel to many different parts of the city .
D. She can go shopping on her way home from work .
【单选题】
Q4: How will the new high-speed train affect the man?___
A. He can take the train to the old part of the city .
B. He can save a lot of money when he takes the train .
C. He can save 20 minutes to go to work with the train .
D. He can take the train to the airport instead of driving .
【单选题】
Q1: How much time on average do Americans spend on their way to work?___
A. About an hour .
B. More than an hour .
C. About half an hour .
D. More than one and a half hours .
【单选题】
Q2: What is the present situation about Americans’ commuting to work?___
A. More and more Americans spend over an hour getting to work .
B. Over 10 percent of Americans spend less than an hour getting to work .
C. Only New York people spend more than 90 minutes getting to work .
D. Over 10 percent of Americans spend more than 90 minutes getting to work .
【单选题】
Q3: Why does Steven choose to have an extreme commute?___
A. Because gas prices are not high .
B. Because the commute is not tiring .
C. Because he can attend a better school .
D. Because he can have his favorite lifestyle .
【单选题】
Q4: Which of the following is the disadvantage of long commutes?___
A. Traffic jams .
B. Expensive housing .
C. Poorer life quality .
D. A tiring and boring trip .
【单选题】
Q1: What did Katy like about Jason’s last Halloween party?___
A. She liked playing an interesting game .
B. She enjoyed seeing many of her old friends .
C. She enjoyed wearing her Halloween costume .
D. She liked the decorations in Jason's front yard .
【单选题】
Q2: What is the actual reason that Katy doesn’t want to attend Jason’s party?___
A. None of her friends likes Jason .
B. None of Jason's guests is young .
C. She wants to go to Linda's party ..
D. She went to Jason's party last year .
【单选题】
Q3: What is special about Linda’s party?___
A. The party will last four hours .
B. Six people will attend the party .
C. They will have huge bags of candy .
D. They will play a new game called "GuessWho ".
【单选题】
Q4: What will Katy do to solve her problem?___
A. Go to Jason's party .
B. Go to Linda's party .
C. Attend both Jason's and Linda's parties .
D. Celebrate Halloween with her parents .
