相关试题
【单选题】
下列各项是关于超高压蒸汽发生系统化学清洗过程主要步骤操作目的描述，其中正确的是___。
A. 酸洗除油、碱洗除锈
B. 碱洗除油、酸洗除锈
C. 酸洗、碱洗除锈更彻底
D. 酸洗、碱洗除油更彻底
【单选题】
乙烯装置工序控制点是___。
A. 裂解炉文丘里压力
B. 裂解炉TMT
C. 裂解炉出口温度
【单选题】
对于乙烷的裂解，我们常用___来表示其裂解深度。
【单选题】
裂解炉烧焦取样分析___，表明裂解炉炉管清焦完成。
A. CO+CO2＜0.2
B. CO＜0.2
C. CO2＜0.2
【单选题】
裂解气在进入急冷油塔前用急冷油直接急冷至200℃，其目的是___。
A. 降低裂解气输送线造价
B. 提高热回收效率
C. 抑制裂解气输送线结焦
【单选题】
裂解炉流出物温度高高的报警值、联锁值分别为___。
A. 330℃、390℃
B. 300℃、390℃
C. 330℃、400℃
D. 400℃,420℃
【单选题】
汽油分馏塔的工艺作用不包括___。
A. 冷却裂解气
B. 分离出裂解燃料油
C. 分离出裂解柴油
D. 回收急冷油的余热
【单选题】
正常运行时,急冷油循环泵发生润滑油压力低联锁的联锁动作应该是___。
A. 处于“自动”状态下的备用急冷油循环泵会自启动
B. 处于“自动”状态下的润滑油辅助油泵会自启动
C. 润滑油主油泵启动
D. 紧急切断该泵驱动蒸汽
【单选题】
乙烯装置高压蒸汽的温度应该是___。
A. 200℃～210℃
B. 280℃～290℃
C. 380℃～390℃
D. 500℃～520℃
【单选题】
用公用站氮气管线进行氮气置换时，其最佳联接形式应为___。
A. 法兰联接
B. 胶管联接
C. 焊接
D. 无法确定
【单选题】
裂解炉汽包连续排污的量是锅炉给水进水总量的___%。
【单选题】
选择在拱顶附近测量裂解炉负压的原因是___。
A. 拱顶处负压最大
B. 拱顶处负压最小
C. 拱顶处负压适中
D. 拱顶处测量负压最为方便
【单选题】
裂解炉超高压蒸汽温度高高的报警、联锁值分别是___。
A. 500℃、550℃
B. 530℃、535℃
C. 525℃、550℃
【单选题】
急冷水中多余的低位热量最终由___带走。
A. 冷却水
B. 工艺水
C. 急冷油
D. 循环乙烷
【单选题】
如果运行中的急冷油循环泵润滑油压力持续下降触发润滑油压力极低联锁，其联锁动作应该是___。
A. 处于“自动”状态下的备用急冷油循环泵会自启动
B. 润滑油主油泵启动
C. 处于“自动”状态下的润滑油辅助油泵会自启动
D. 紧急切断该泵驱动蒸汽
【单选题】
炉正常点火升温过程中，升温速度不应超过___℃/h。
A. 50
B. 100
C. 150
D. 200
【单选题】
硫含量过高将导致___。
A. 甲烷化反应器飞温
B. 急冷油粘度上升
C. 急冷水pH值偏高
D. 碱洗系统耗碱量增大
【单选题】
急冷水塔 T-103釜温控制指标 ___
A. 82.6℃
B. 85℃
C. 83.5℃
D. 78℃
【单选题】
原料注硫的目的是___。
A. 提高反应速度
B. 防止炉管渗碳,降低裂解气中CO量
C. 保护炉管，同时提高收率
【单选题】
本装置中所用的高压锅炉给水的压力为___。
A. 45Kg/cm
B. 125Kg/cm
C. 30Kg/cm
【单选题】
发生全装置停电时,下列说法不正确的是___。
A. 各电机全部停止运行
B. 各裂解炉引风机全部停止运行
C. 各机泵全部停止运行
D. 各裂解炉原料电磁阀关闭
【单选题】
116下作业内容，不属于一般作业的是___。
A. 搭拆脚手手架
B. 机泵维修
C. 破土
D. 拆装换热器
【单选题】
以下关于设备润滑管理的说法不正确的是___。
A. 设备润滑的目的是减少设备零部件磨损，保证设备正常运行，延长设备使用寿命
B. 润滑的任务是按技术规范要求，正确选用润滑材料，定时、定点、定量对设备进行润滑
C. 设备润滑包括“三定”和油品的“五级”过滤
【单选题】
炉膛压力高高的报警值、联锁值分别为___
A. 0Pa、50Pa
B. 10Pa、50Pa
C. -10Pa、0Pa
【单选题】
F-001汽包液位低低的报警、联锁值分别是___。
A. 35%，5.3%
B. 34.38%，11.25%
C. 45%，5.3%
【单选题】
乙烯装置仪表风的露点应为___℃。
A. －90
B. －70
C. －40
D. 0
【单选题】
下列各项中，不属于“三查四定”内容的是___。
A. 查设计漏项
B. 查施工质量隐患
C. 查未完工程
D. 竣工管线试压查漏
【单选题】
裂解炉正常点火升温过程中，炉膛温度达到___℃左右时，可以投稀释蒸汽。
A. 100
B. 150
C. 200
D. 300
【单选题】
124向锅炉给水中加注的磷酸盐是___。
A. Na3PO4
B. Na2HPO4
C. NaH2PO4
D. K3PO4
【单选题】
125设备倒空后通常要打开放空阀，其目的是___。
A. 泄压
B. 充压
C. 使设备内部与大气连通，加快倒空速度
D. 没什么目的
【单选题】
下列关于系统进行氮气置换合格的叙述正确的是___。
A. 任何一个采样点氧含量分析合格即可
B. 至少两个采样点氧含量分析合格
C. 至少三个采样点氧含量分析合格
D. 所有采样点氧含量分析都要合格
【单选题】
127工艺水过滤器的滤芯材质为___。
A. 聚丙烯纤维
B. 不锈钢
C. 碳钢
D. 铝合金
【单选题】
在测量裂解炉某根炉管管壁温度时，下列叙述正确的是___。
A. 应选择炉管上部某点测量
B. 应选择炉管中部某点测量
C. 应选择炉管下部某点测量
D. 应选择炉管上、中、下部各一点测量
【单选题】
与机械密封相比，填料密封的优点有___。
A. 寿命长
B. 操作维修方便
C. 密封性可靠
D. 适用范围广
【单选题】
下列选项中，不属于塔类设备检修内容的是___。
A. 蒸煮
B. 清扫塔盘
C. 校验安全附件
D. 检查修理塔体油漆和保温
【单选题】
裂解炉对流段原料预热盘管破裂后，室外最明显的变化是___。
A. 裂解炉负压不断降低
B. 裂解炉烟气温度异常上升
C. 裂解炉烟囱冒白烟
D. 裂解炉烟囱冒黑烟
【单选题】
利用外接调质油的方法降低急冷油粘度存在明显的弊端，下列有关叙述不正确的是___。
A. 只在短时间内有效，不能彻底解决问题
B. 增加了汽油分馏塔的气相负荷
C. 粘度降低太快，不宜控制
D. 不利于装置高负荷生产
【单选题】
裂解炉发生燃料气低压联锁停车后，不正确的处理是___。
A. 停止稀释蒸汽供应
B. 停止原料供应
C. 维持锅炉给水供应
D. 关小烟道挡板
【单选题】
裂解炉点火前需要对该炉燃料气管线进行氮气置换，置换合格后氧含量应___。
A. 〈0.2%
B. 〈0.3%
C. 〈0.4%
D. 〈1.0%
推荐试题
【简答题】
就我来说，我发现外表往往是靠不住的。譬如，要是你仅凭外表去判断诸如爱德华・海德・伯顿这样的人，你就错了。外表上，伯顿像是个表里一致的人。他个子很小，满头白发，有着一双温和、蔚蓝的眼睛，文雅且坦率。然而，他原来却是十分的残忍。他侮辱和愚弄穷困潦倒的伦尼，让他去做那样的蠢事。更让人吃惊的是，他对伦尼的死全然冷漠无情。毫无疑问，他是个铁石心肠的家伙。
【简答题】
They say that pride comes before a fall. In the case of both Napoleon and Hitler, the many victories they enjoyed led them to believe that anything was possible, that nothing could stand in their way. Russia's icy defender was to prove them wrong.
【简答题】
In 1812, Napoleon Bonaparte, Emperor of the French, led his Grand Army into Russia. He was prepared for the fierce resistance of the Russian people defending their homeland. He was prepared for the long march across Russian soil to Moscow, the capital city. But he was not prepared for the devastating enemy that met him in Moscow -- the raw, bitter, bleak Russian winter.
【简答题】
In 1941, Adolf Hitler, leader of Nazi Germany, launched an attack against the Soviet Union, as Russia then was called. Hitler's military might was unequaled. His war machine had mowed down resistance in most of Europe. Hitler expected a short campaign but, like Napoleon before him, was taught a painful lesson. The Russian winter again came to the aid of the Soviet soldiers.
【简答题】
In the spring of 1812, Napoleon assembled an army of six hundred thousand men on the borders of Russia. The soldiers were well trained, efficient, and well equipped. This military force was called the Grand Army. Napoleon, confident of a quick victory, predicted the conquest of Russia in five weeks.
【简答题】
Shortly afterwards, Napoleon's army crossed the Neman River into Russia. The quick, decisive victory that Napoleon expected never happened. To his surprise, the Russians refused to stand and fight. Instead, they retreated eastward, burning their crops and homes as they went. The Grand Army followed, but its advance march soon became bogged down by slow-moving supply lines.
【简答题】
In August, the French and Russian armies engaged at Smolensk, in a battle that left over ten thousand dead on each side. Yet, the Russians were again able to retreat farther into Russian territory. Napoleon had won no decisive victory. He was now faced with a crucial decision. Should he continue to pursue the Russian army? Or should he keep his army in Smolensk for the approaching winter?
【简答题】
Napoleon took the gamble of pressing on to Moscow, 448 kilometers away. On September 7, 1812, the French and Russian armies met in fierce battle at Borodino, 112 kilometers west of Moscow. By nightfall, thirty thousand French and forty-four thousand Russians lay dead or wounded on the battlefield.
【简答题】
Again, the Russian army retreated to safety. Napoleon had a clear path to Moscow, but the occupation of the city became an empty victory. The Russians fled their capital. Soon after the French arrived, a raging fire destroyed two-thirds of the city. Napoleon offered a truce to Alexander I, but the Russian czar knew he could bide his time: "We shall let the Russian winter fight the war for us."
【简答题】
Napoleon soon realized he could not feed, clothe, and quarter his army in Moscow during the winter. In October 1812, he ordered his Grand Army to retreat from Moscow.
【简答题】
The French retreat turned into a nightmare. From fields and forests, the Russians launched hit-and-run attacks on the French. A short distance from Moscow, the temperature had already dropped to minus 4 degrees Celsius. On November 3, the winter's first snow came. Exhausted horses fell dead in their tracks. Cannon became stuck in the snow. Equipment had to be burned for fuel. Soldiers took ill and froze to death. The French soldiers dragged on, leaving the dead along every mile.
【简答题】
As the Russian army was gathering its strength, the French had to flee Russia to avoid certain defeat. At the Berezina River, the Russians nearly trapped the retreating French by burning the bridges over the swollen river. But Napoleon, by a stroke of luck, was able to build two new bridges. Thousands of French soldiers escaped, but at the cost of fifty thousand dead. Once across the Berezina, the tattered survivors limped toward Vilna.
【简答题】
Of the six hundred thousand soldiers Napoleon had led into Russia, less than one hundred thousand came back. The weakened French army continued its retreat westward across Europe. Soon, Britain, Austria, Russia, and Prussia formed a powerful alliance and attacked these stragglers. In March 1814, Paris was captured. Napoleon abdicated and went into exile, his empire at an end.
【简答题】
By early 1941, Adolf Hitler, leader of Nazi Germany, had seized control of most of Europe. To the east of Hitler's German empire was the Soviet Union. On June 22, 1941, without a declaration of war, Hitler began an invasion of the Soviet Union that was the largest military land campaign in history. Confident of a quick victory, Hitler expected the campaign to last no longer than three months. He planned to use the blitzkrieg, or "lightning war," tactics that had defeated the rest of Europe. The invasion had three broad thrusts: against Leningrad and Moscow and through the Ukraine.
【简答题】
Caught off guard by the invasion, Soviet leader Joseph Stalin instructed the Russian people to "scorch the earth" in front of the German invaders. Farms and factories were burned, destroyed, or rendered useless. During the first ten weeks of the invasion, the Germans pushed the front eastward, and the Russians suffered more than a million casualties.
【简答题】
In the north, the Germans closed in on Leningrad. Despite great suffering, however, the people of Leningrad refused to surrender. As the battle of Leningrad dragged on into winter, the city's situation became desperate. As food ran out, people died from hunger and disease. By the middle of the winter of 1941-1942, nearly four thousand people starved to death every day. Close to one million people died as a result of the siege.
【简答题】
In the center of Russia, Hitler's goal was the capture of Moscow. Because the Germans had anticipated a quick victory, they had made no plans for winter supplies. October arrived with heavy rains. "General Mud" slowed down the movement of the Germans' lightning attack.
【简答题】
As Hitler's armies drew closer and closer to Moscow, an early, severe winter settled over the Soviet Union, the harshest in years. Temperatures dropped to minus 48 degrees Celsius. Heavy snows fell. The German soldiers, completely unprepared for the Russian winter, froze in their light summer uniforms. The German tanks lay buried in the heavy snowbanks. The Russian winter brought the German offensive to a halt.
【简答题】
By the summer of 1942, Hitler had launched two new offensives. In the south, the Germans captured Sevastopol. Hitler then pushed east to Stalingrad, a great industrial city that stretched for 48 kilometers along the Volga River. Despite great suffering, Soviet defenders refused to give up Stalingrad.
【简答题】
In November 1942, the Russians launched a counterattack. With little or no shelter from the winter cold in and around Stalingrad, German troops were further weakened by a lack of food and supplies. Not until January 1943 did the Germans give up their siege. Of the three hundred thousand Germans attacking Stalingrad, only ninety thousand starving soldiers were left. The loss of the battle for Stalingrad finally turned the tide against Hitler. The German victories were over, thanks in part to the Russian winter.
【简答题】
During 1943 and 1944, the Soviet armies pushed the German front back toward the west. In the north, the Red Army broke the three-year siege of Leningrad with a surprise attack on January 15, 1944. Within two weeks, the heroic survivors of Leningrad saw their invaders depart. By March 1944, the Ukraine farming region was again in Soviet hands. On May 9, 1944, Sevastopol was liberated from the Germans. The Russians were now heading for Berlin.
【简答题】
For Hitler, the invasion of the Soviet Union had turned into a military disaster. For the Russian people, it brought unspeakable suffering. The total Soviet dead in World War II reached almost 23 million.
【简答题】
The elements of nature must be reckoned with in any military campaign. Napoleon and Hitler both underestimated the severity of the Russian winter. Snow, ice, and freezing temperatures took their toll on both invading armies. For the Russian people, the winter was an icy defender.
【单选题】
________不属于鼠类及体表寄生虫携带的病原体。___
A. 鼠疫耶尔森菌
B. 汉坦病毒
C. 黄病毒属病毒
D. 致病性钩端螺旋体
【单选题】
病媒生物死体样本运送，如果在24h内不能到达实验室的，运送过程中箱内温度应保持在_____。___
A. 4℃以下
B. 0℃以下
C. -20℃以下
D. 4℃以上
【单选题】
病媒生物死体样本运送，如果在装箱后4h内能够到达实验室的，运送过程中箱内温度应保持在______。___
A. 4℃以下
B. 0℃以下
C. -20℃以下
D. 4℃以上
【单选题】
病媒生物的死体样本运送，如果4h-24h内能到达实验室的，应将样品置于-30℃冷冻后再送样，运送过程中箱内温度应保持在________。___
A. 4℃以下
B. 0℃以下
C. -20℃以下
D. 4℃以上
【单选题】
恰加斯病也称为美洲锥虫病，其重要的传播媒介是________。___
A. 采采蝇
B. 厩螫蝇
C. 锥蝽
D. 埃及伊蚊
【单选题】
_______是黑热病内脏利什曼病的主要传播媒介。___
【单选题】
对于用作虫媒病毒分离或检测的蚊类标本，现场采集后应采用_______方式处置和运送。___
A. 杀虫剂熏杀+常温运输
B. 等蚊虫自然死亡+常温运输
C. 冷冻处死+常温运输
D. 冷冻处死+冷冻状态运输
【单选题】
_______不适用于入出境集装箱携带蝇、蚊、蠓的采集。___
A. 挥网法
B. 电动吸蚊器法
C. 直接捡取法
D. 二氧化碳诱蚊灯法
【单选题】
入境航空器应在______开始病媒生物监测。___
A. 卸货完成后
B. 抵达后
C. 等航空公司通知
D. 发现病媒生物时
【单选题】
进行集装箱携带输入性病媒生物监测时应准备的个人防护用品包括______。___
A. 乳胶手套、防护服
B. 防毒面具
C. 自给式呼吸器
D. 化学防护服
【单选题】
若要对采集到的输入性鼠类进行携带的病毒进行检测，取得其内脏器官的保存温度是_____。___
A. -80℃或以下
B. 0℃
C. 常温
D. 4℃-8℃
【单选题】
截获输入性活鼠或来自鼠疫流行区死鼠及经总署专家组确认和复核属于全国口岸首次截获的病媒生物应在______报告总署。___
A. 2小时之内
B. 8小时之内
C. 12小时之内
D. 24小时之内
【单选题】
入境船舶的蚊类和蝇类等双翅目病媒生物监测调查应白天在检疫锚地停泊期间进行，锚位距陆地距离不少于______，或在船舶靠泊后_____内进行。___
A. 1000 m；1h
B. 800 m、2 h
C. 400 m、4 h
D. 100 m、24 h
【单选题】
开展入境船舶输入性病媒生物监测工作中，在采集并保存病媒生物时由________陪同人员确认。___
A. 旅行社
B. 船方
C. 代理公司
D. 海事部门
【单选题】
在国境口岸或者交通工具上发现______有反常死亡或者死因不明的，国境口岸有关单位或者交通工具的负责人，必须立即向卫生检疫机关报告，迅速查明原因，实施卫生处理。___
【单选题】
采用鼠夹法监测鼠密度，应连续布放______。___
【单选题】
______不属于口岸区域鼠类常用监测方法。___
A. 鼠笼法
B. 鼠夹法
C. 目测法
D. 粉迹法
