【单选题】
为了防止机泵的轴弯曲变形，则备用机泵要求定期___
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相关试题
【单选题】
以下___不是硫封罐的作用。
A. 防止气体从液硫线进硫池
B. 保护风机
C. 不使上游装置憋压
D. 提高操作压力
【单选题】
屏蔽泵可以作截流运转，但截流时间不允许超过___分钟
【单选题】
汽轮主油箱的作用是___。
A. 储油
B. 分离水分
C. 储油和分离水分、空气杂物和沉淀物
D. 以上答案都不对
【多选题】
催化剂装填时催化剂上、下面需要装填一定厚度的瓷球，是起___作用。
A. 均匀分布
B. 保护
C. 增加压降
D. 减慢气速
【多选题】
停工反应器内催化剂的保护操作，以下___是正确的。
A. 反应器进出口加盲板
B. 反应器充氮气
C. 催化剂装桶保护
D. 催化剂装袋保护
【多选题】
影响克劳斯催化剂活性的因素___。
A. 催化剂预硫化效果
B. 反应温度
C. 催化剂积硫
D. 催化剂积碳
【多选题】
废热锅炉投用后，锅炉水的控制指标有___。
A. 电导率
B. PH值
C. 磷酸根
D. 钠离子
【多选题】
废热锅炉排污的作用是___。
A. 降低锅炉含盐量
B. 排出锅炉内的废渣、污垢
C. 当锅炉液位高时，可降低液位
D. 停炉检修时，排净锅炉内的水
【多选题】
设置燃烧炉废热锅炉的作用是___。
A. 降低过程气温度，冷凝液硫
B. 回收热量
C. 提高硫分压
D. 提高后部的转化率
【多选题】
酸性气燃烧炉炉膛温度低的原因是___。
A. 酸性气中烃含量下降
B. 风机供风量下降
C. 酸性气中硫化氢浓度下降
D. 酸性气中氨含量下降
【多选题】
溶剂再生塔压力波动的原因有___。
A. 进塔富液的组分
B. 富液进料量
C. 酸性气抽出量
D. 贫液浓度
【多选题】
溶剂再生塔顶温高的处理方法是___。
A. 适当降低塔底加热蒸汽量
B. 适当增加塔顶回流量
C. 适当增加塔底加热蒸汽量
D. 适当降低塔顶回流量
【多选题】
溶剂再生塔底温高对装置能耗的影响主要是___。
A. 塔底加热蒸汽消耗量大
B. 富液泵电耗大
C. 贫液冷却负荷大
D. 贫液泵电耗大
【多选题】
贫液中H2S含量高的原因是___。
A. 再生塔顶部温度高
B. 再生塔压力高
C. 富液中CO2含量偏高
D. 重沸器壳程液位过高
【多选题】
降低克劳斯尾气中硫化氢含量的方法是___。
A. 减少酸性气波动
B. 提高反应炉炉膛温度
C. 提高配风比
D. 提高克劳斯反应器进口温度
【多选题】
克劳斯反应器床层温度的影响因素是___。
A. 反应器进口H2S、SO2浓度变化
B. 催化剂活性
C. 反应器进口温度的变化
D. 系统压力的变化
【多选题】
溶剂发泡时的处理方法是___。
A. 添加适量的消泡剂
B. 加强溶剂过滤
C. 检查储罐氮封是否完好，防止空气漏入
D. 加水置换
【多选题】
酸性气原料突然中断的处理方法是___。
A. 改烧瓦斯
B. 时间长装置按紧急停工处理
C. 燃烧炉闷炉待料
D. 焚烧炉闷炉待料
【多选题】
脱硫剂富液与贫液主要区别有___。
A. 硫化氢浓度
B. 二氧化碳浓度
C. 烃浓度
D. 氮气浓度
【多选题】
尾气焚烧炉鼓风机停机时焚烧炉的工艺现象是___。
A. 进炉风量为零
B. 发生联锁自保
C. 炉膛压力升高
D. 炉膛熄火
【多选题】
硫磺排污时发现黑硫磺，其生成原因不正确的是___。
A. 原料带水
B. 燃烧炉瓦斯进炉阀门内漏
C. 原料带烃
D. 原料带胺
【多选题】
瓦斯带水的工艺现象___。
A. 炉膛火焰发红
B. 炉膛压力上升
C. 炉膛出口温度急剧下降
D. 如带水过多火焰熄灭
【多选题】
烟囱冒黑烟的原因是___。
A. 焚烧炉配风过小
B. 风机放空阀开度过大
C. 烟气量过大
D. 废热锅炉腐蚀
【多选题】
停仪表风的现象___。
A. 调节阀失灵
B. 操作参数变化较大
C. 调节阀开度为100%
D. 控制阀可以控制
【多选题】
烟道气温度高时的处理方法是___。
A. 烟道增加衬里
B. 开好克劳斯系统
C. 全开烟道进口蝶阀
D. 降低焚烧炉废热锅炉自发中压蒸汽压力
【多选题】
克劳斯反应器超温经常发生在___。
A. 开工时
B. 停工时
C. 配风比高时
D. 配风比低时
【多选题】
瓦斯带油，将会导致___。
A. 瓦斯减量而炉温下降
B. 瓦斯减量而炉温上升
C. 焚烧炉炉膛熄火
D. 阻火器失效
【多选题】
溶剂再生塔压力高的处理方法是___。
A. 检查是否克劳斯系统压力上升
B. 降低塔底蒸汽流量
C. 检查回流罐液面是否高
D. 提高回流量
【多选题】
溶剂再生塔压力高的危害是___。
A. 酸性气放火炬
B. 溶剂解吸效果变差
C. 溶剂老化
D. 溶剂浓度变低
【多选题】
停燃料气的处理方法是___。
A. 检查阻火器是否堵
B. 检查控制阀是否处于全关状态
C. 检查是否瓦斯分液罐是否满
D. 检查联锁是否完好
【多选题】
停高压除氧水对硫磺回收装置的影响是___。
A. 造成锅炉水位低
B. 损坏蒸汽过热器
C. 加工量降低
D. 对装置没有影响
【多选题】
在PID控制中，有___控制参数。
A. 比例度
B. 积分时间
C. 微分时间
D. 时间
【多选题】
酸性水脱气罐压力过低的原因___。
A. 脱气罐液面过低
B. 进料烃含量过小
C. 进料量小
D. 仪表故障
【多选题】
汽提塔塔顶压力低的原因是___。
A. 污水浓度高
B. 进料量小
C. 酸性气排出量大
D. 加热蒸汽量大
【多选题】
汽提塔底液面偏高的原因是___。
A. 加热蒸汽量大
B. 热进料量大
C. 净化水排出量小
D. 仪表失灵
【多选题】
汽提塔塔顶压力偏高的原因是___。
A. 加热蒸汽量大
B. 污水浓度高
C. 克劳斯系统压力高
D. 仪表失灵
【多选题】
汽提塔顶酸性气线堵的现象___。
A. 塔顶压力升高
B. 顶温下降
C. 酸性气流量降低
D. 塔顶压力下降
推荐试题
【单选题】
Which of the following statements is Not True? ___
A. Your boss may be willing to change his behavior than your think.
B. Some managers don’t care how much their words or actions upset staffers.
C. You should tell your managers how their outbursts make you feel.
D. If the boss values your work, he may stop his abusiveness.
【单选题】
Which of the following public places is NOT mentioned that have banned mobiles? ___
A. restaurants
B. gas stations
C. theatres
D. museums
【单选题】
What happened when the cellphone of the speaker’s friend rang? ___
A. His friend answered the phone and the speaker became invisible to his friend.
B. They answered the phone together.
C. The speaker threw away his friend’s cellphone.
D. His friend hung up the phone and kept talking to the speaker. (C)
【单选题】
What happened to the man? ___
A. He had a car accident.
B. He had his arms broken.
C. He lost his mobile phone.
D. He was not able to use his mobile because he was in a remote area.
【单选题】
Which of the following is NOT true? ___
A. Today there are about 400 million cellphone owners.
B. Today there are about 300 million Personal Computer subscribers.
C. Cellphones will be more often used.
D. Cellphones will completely replace Personal Computers.
【单选题】
Which of the following is true? ___
A. Ellen Johnson-Sirleaf stayed in her country during the nation’s civil war.
B. She is still working for the United Nations.
C. She is the first woman ever elected president of an Asian country.
D. She is a Liberia.
【单选题】
What do you know about the solar eclipse? ___
A. Only hundreds of people gazed at it.
B. It was caused by the earth passing in front of the moon.
C. It was not often seen.
D. It started in Mongolia and ended in Brazil.
【单选题】
What is true about this meeting between the USA and China? ___
A. It was a meeting between Xi Jinping and Donald Trump.
B. It was the first time that the Chinese president had visited the United States.
C. The issue of the Olympics was discussed.
D. South Korea’s nuclear weapons program was discussed.
【单选题】
In which year did the station’s first permanent crew arrived? ___
A. 1998
B. 2000
C. 2002
D. 2003
【单选题】
If elected, ________________. ___
A. Richardson would be the first Hispanic President.
B. Clinton would be the first African-American President.
C. Romney world be the first Hispanic President.
D. Clinton would be the first Mormon President.
【单选题】
What are the things that the speaker’s inner and outer life based on? ___
A. Money
B. Health
C.
D. elicious food
【单选题】
What kind of things has its own reason for existing? ___
A. Questioning
B. The structure of reality
C. Curiosity
D. The mysteries of eternity
【单选题】
Who are so full of doubts? ___
A. Fools and fanatics
B. Wise people
C. Professors
D. University students
【单选题】
To the speaker, what kind of things always win in life? ___
A. Truth and love
B. Power and status
C. Great minds
D. Money and material
【单选题】
What’s the key word of the speaker? ___
A. Love
B. Power
C. Freedom
D. Curiosity
【单选题】
What happened to the man? ___
A. He committed identity theft.
B. He was put in prison.
C. He reported a case of theft to police.
D. He robbed a bank.
【单选题】
What is the attitude of Mrs. Washington? ___
A. She tries to cover up for little George.
B. She thinks Mr. Washington should not ask George directly.
C. She encourages George to chop down the tree.
D. She thinks Mr. Washington should put the blame on the sharp axe.
【单选题】
What do Nancy’s colleagues think about her transgender transition? ___
A. They think it is ridiculous.
B. They make a big fuss about it.
C. They take it lightly.
D. They are sympathetic.
【单选题】
What are the two women talking about? ___
A. They are talking women’s liberation.
B. They are talking about an ideal husband.
C. They want a rewarding job.
D. They are talking about women’s choice between family and career.
【单选题】
According to what you’ve heard, which of the following is NOT true? ___
A. The two ten-minute workouts help people get into shape in a short time.
B. The two ten-minute workouts are designed for the people of certain level of fitness.
C. The two ten-minute workouts help people to lose weight and to be vigorous.
D. The two ten-minute workouts are suitable for most people.
【单选题】
What does Cindy say about visiting Costa Rica in June? ___
A. It is bad because June falls in the rainy season.
B. It is bad because there is almost no sunshine in June.
C. It is not bad because it seldom rains on the coast.
D. It is not bad because it does not rain all the time and in all the places.
【单选题】
What did the professor say about the translation of idioms across language? ___
A. Almost all idioms are translatable and can be universally used.
B. Idioms are hardly translatable and cannot be universally used.
C. Not all idioms are translatable but many have translations in other language.
D. All idioms are translatable and tend to become international.
【单选题】
According to Professor Randal, which of the following is true for SAT II? ___
A. It tests your critical thinking and problem-solving skills.
B. It is more content oriented.
C. It is designed to measure subject-area knowledge.
D. It is designed to measure achievement in
E. nglish, math, reading, and science.
【单选题】
The movie in IMAX format adds the amazing effects except ___________. ___
A. the effect of sound
B. the effect of view
C. the effect of landscape
D. the effect of mystery
【单选题】
What can we learn from the conversation? ___
A. Nobody thinks he is under stress.
B. People should avoid stress completely.
C. Stress is a normal state of affairs.
D. Nobody is subject to stress.
【单选题】
What is Tom’s attitude towards the mobile phone? ___
A. It is very convenient to send text messages.
B. People have to put up with the inconvenience of using mobile phones.
C. He feels important when he uses his mobile phone in public.
D. He cannot live a day without his mobile phone.
【单选题】
Where did Helena start learning Dutch? ___
A. Spain
B. Holland
C. Sri Lanka
D. Indonesia
【单选题】
According to what the broadcaster says about what happened when the blackout occurred, which of the following is not true? ___
A. People crowded the streets of New York.
B. Throngs of people walked across the bridge, screaming and cursing.
C. The blackout stopped subways, buses and turned off traffic lights.
D. Many people are thinking of hitching a ride.
【单选题】
Who is Dr. Burkey? ___
A. The anchor
B. The questioner
C. A student
D. A clinical psychologist.
【单选题】
Which is true about Gandhi’s nonviolence? ___
A. There will be no pains and defeats when people use nonviolence.
B. People should be prepared to die like a soldier when they use nonviolence.
C. Nonviolence means that you have to accept injustice.
D. Soldiers can use violence against violence.
【单选题】
肖东和外祖父是___
A. 直系血亲
B. 直系姻亲
C. 旁系血亲
D. 旁系姻亲
【单选题】
按罗马法的亲等算法，小杨和叔叔的孙子是___
A. 三等亲
B. 四等亲
C. 五等亲
D. 六等亲
【单选题】
甲（男）的外祖母乙是丙（女）的父亲丁的胞姊，因此___
A. 乙是丙的姑母，丁是甲母的舅父
B. 乙是丙的姨母，丙是乙的甥女
C. 乙是丙的舅母，丁是甲母的叔父
D. 乙是丙的婶母，丙是乙的侄女
【单选题】
下列各种亲属关系中，属于直系拟制血亲的有___
A. 外祖父母与外孙子女
B. 养父母与养子女
C. 祖父母与孙子女
D. 继父母与未受其抚养教育的继子女
【单选题】
被告人王某，男，48岁，某村农民。被告人马某，女，45岁，某村农民，系被告人王某之妻。被告人王某与其兄二人按月轮流负担其母（67岁，丧失劳动能力）的生活费。2003月份，被告人王某以收入不足等理由，向其兄提出要求，要其兄独自负担母亲的生活费一年。在向其兄说过此事后，未经其兄、母的同意，被告人王某便拒不负担赡养义务。8月23日早上，其母轮到被告人王某家吃饭，途中与被告人马某相遇，马某便对婆婆进行辱骂，不准其进屋，并将老人推倒在地，8月25日晚上，其母到王某家，见儿子和几个孩子正在吃饭，便哀求儿子给点饭吃。王某未予理睬，老人便自盛了一碗饭，正吃时，马某从外面回来，见状便恶语相加，并冲上去把碗抢下来，随后又将老人打了一顿，赶出门外，8月27日，老人忍无可忍，当众诉冤。之后因生活无着，被迫含愤服毒而死。问：构成虐待罪还是遗弃罪？___
【单选题】
甲男与乙女通过网聊恋爱，后乙提出分手遭甲威胁，乙无奈遂于甲办理了结婚登记。婚后甲得知，乙婚前就患有医学上不应当结婚的疾病且久治不愈，于是甲向法院起诉撤销该婚姻，下列说法正确的是___
A. 法院应判决撤销该婚姻
B. 该案应判决宣告该婚姻无效
C. 对该案的审理应当进行调解
D. 当时人可以对法院的处理结果依法提出上诉
【单选题】
甲男与乙女系出自同一外祖父母的表兄妹，后来乙女被他人收养。根据我国婚姻法的规定，他们___
A. 可以结婚
B. 如果双方不生育子女可以结婚
C. 不能结婚
D. 以上均不正确
【单选题】
某甲与某乙已登记结婚，但未同居，也未举行婚礼。之后某甲后悔与某乙结婚，进行下列（ ）行为后，婚姻关系才能解除。___
A. 调解
B. 宣布婚姻无效
C. 离婚
D. 撤销结婚登记
【单选题】
甲乙夫妻经协商同意离婚，甲因出差委托丙去离婚登记机关代为办理离婚登记手续，依我国法律，丙___
A. 可以代理
B. 在甲乙双方同意下可以代理
C. 在取得甲授权委托书的情况下可以代理
D. 不能代理
【单选题】
甲乙结婚后购得房屋一套，仅以甲的名字进行了登记。后甲乙感情不和，甲擅自将房屋以时价出售给不知情的丙，并办理了房屋所有权变更登记手续，下列正确的是___
A. 买卖合同有效，房屋所有权未转移
B. 买卖合同无效，房屋所有权已转移
C. 买卖合同有效，房屋所有权已转移
D. 买卖合同无效，房屋所有权未转移
