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【填空题】
139.1号机闭式水箱水位在正常运行时维持在___mm,___mm水位高报警。
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答案
1300~1700|1800
解析
暂无解析
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140.1号机辅助蒸汽系统汽源由本机___、___抽汽及___提供。
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141.1号机在启动及低负荷时辅助蒸汽来自___及___供汽,正常运行时由本机___供汽。
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142.1号机辅助蒸汽联箱压力为___MPa,温度为___℃。
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143.1号机辅助蒸汽系统安全门动作定值为___ MPa。
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144.除氧器在滑压运行时易出现___和___。
【填空题】
145.1号机除氧器水位高Ⅲ值___时联锁开启除氧器___,关闭四抽___,关闭四抽___,关闭除氧器蒸汽___。
【填空题】
146.除氧器排氧门开度大小应以保证含氧量___而___冒汽为原则。
【填空题】
147.滑压运行除氧器当负荷突增时,除氧器的含氧量___。
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148.1号机5号低加水位高一值时,开启5号低加___调节门,水位高二值时抽汽电动门及其逆止门___。
【填空题】
149.1号机5段抽汽电动阀满足下列条件之一,即联锁关闭:___跳闸或___解列,___保护动作,5号低加水位___。
【填空题】
150.加热器温升小的原因有:抽汽电动门未___,汽侧积有___。
【填空题】
151.加热器泄漏会使___、___、___、___。
【填空题】
152.加热器运行要监视进、出加热器的___;加热器蒸汽的压力,温度及被加热水的流量;加热器疏水___;加热器的___。
【填空题】
153.高、低压加热器水位过高:会淹没铜管,影响___,严重时会造成___。水位过低:将部分蒸汽不凝结就会经疏水管进入下一级加热器___加热器效率。
【填空题】
154.1号机5号低加正常疏水门满足下列条件之一,即联锁关闭:___水位低,___水位高二值,___出口或者入口门关闭。
【填空题】
155.高压加热器运行中水位升高,则端差___。
【填空题】
156.加热器的传热端差是加热蒸汽压力下的饱和温度与加热器给水___温度之差。
【填空题】
157.汽机旁路系统中低压减温水采用___。
【填空题】
158.凝结水含氧量应小于___微克/升,锅炉给水含氧量应小于___微克/升。
【填空题】
159.氢冷发电机充氢后在运行中,机内氢纯度应达到___以上,气体混合物中的氧量不超过___。
【填空题】
160.给水泵不允许在低于___下运行。
【填空题】
161.1号机循环水系统主要向___、___系统供水正常运行。水源取长江水。
【填空题】
162.1号机循环水泵允许启动条件有循环泵___正常,无循环泵___条件。
【填空题】
163.1号机凝结水泵允许启动条件有线圈及轴承___正常,入口门___,.凝汽器___正常,出口门___,无___条件。
【填空题】
164.1号机真空泵启动允许条件有___,___已关。
【填空题】
165.1号机顶轴油泵在无___低信号时允许启动。
【填空题】
166.1号机.汽动给水泵的前置泵在除氧器水位___,汽泵前置泵___正常 ,汽泵___已开,小机___时可以启动。
【填空题】
167.1号机主机润滑油系统滤网切换时应注意观察切换阀___指示,确认备用___。
【填空题】
168.1号机主机润滑油系统滤网切换时应打开___及备用过滤器___,流体溢出时才可以全部关闭。
【填空题】
169.1号机凝结水泵正常运行时泵推力轴承温度___,电流不超___A。
【填空题】
170.1号机氢气系统主要由氢站的高压___、置换用的___钢瓶,氢气___,氢气过滤器,___分析器,液体探测,氢气露点仪组成。
【填空题】
171.氢气系统主要是冷却转子___和定子___,使其温度在允许范围内稳定运行。
【填空题】
172.1号发电机采用___冷却方式,___为水冷,___为氢气内冷,___为氢气外部冷却。
【填空题】
173.二氧化碳置换空气时应确认二氧化碳纯度不得低于___。
【填空题】
174.氢气置换二氧化碳时应确认氢纯度不得低于___%。
【填空题】
175.密封油系统的作用是向发电机机___提供连续不断的密封油,密封发电机内的___,防止向外泄露。
【填空题】
176.1号机密封油系统主要由2台___油泵,2台___油泵,空、氢侧各两台___、过滤器,一个空侧回油箱,一个氢侧回油箱,___、平衡阀等部件组成。
【填空题】
177.1号机定子冷却水系统主要由两台100%容量的___、___冷却器、两台过滤器、一个水箱、一台___交换器与发电机定子线圈组成。
【填空题】
178.1号机定冷水系统对水箱水位正常范围___mm,高值报警:___mm,低值报警:___mm.
【填空题】
179.定冷水系统正常运行应检查泵组___,___情况,定冷泵___不超限,轴承___正常,定冷水___,___,___正常。
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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.
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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.
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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.
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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.
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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.
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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.
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【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。___
A. 锥蝽
B. 白蛉
C. 蠓
D. 蚋
【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。___
A. 蚊类
B. 鼠类
C. 蝇类
D. 蜚蠊
【单选题】
采用鼠夹法监测鼠密度,应连续布放______。___
A. 2天
B. 3天
C. 4天
D. 5天
【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
【单选题】
采用粉迹法监测鼠类密度时,滑石粉块的尺寸是______。___
A. 20cm×20cm
B. 30cm×30cm
C. 40cm×40cm
D. 50cm×50cm
【单选题】
______不属于蚊虫幼虫监测指标。___
A. 容器指数
B. 刺叮指数
C. 房屋指数
D. 布雷图指数
【单选题】
______不属于蚊虫成虫监测方法。___
A. 人帐诱法
B. 人工小时法
C. 小黑板法
D. 诱蚊器收集法
【单选题】
______不属于蝇类成虫监测方法。___
A. 诱蝇笼诱捕法
B. 捕蝇网网捕法
C. 直接目测法
D. 路径指数法
【单选题】
啮齿动物的臼齿常具有_____。___
A. 1对
B. 2对
C. 3对
D. 4对
【单选题】
______是仓鼠科特征。___
A. 背部有背囊
B. 尾部有尾囊
C. 口中两侧有颊囊
D. 腹部腹面有腹囊
【单选题】
_______蜱类假头基通常为矩形。___
A. 花蜱属
B. 璃眼蜱属
C. 扇头蜱属
D. 异扇头蜱属
【单选题】
_________鉴别特征是:体型较大,前胸背板具褐色蝶形大斑,其后缘中央向后延伸不达后缘,且前缘具“T”型黄斑。___
A. 黑胸大蠊
B. 美洲大蠊
C. 德国小蠊
D. 褐斑大蠊
【单选题】
_________鉴别特征是:中胸侧板有垂直的侧板杆,无颊栉和前胸栉,后头鬃2列,前足第5跗节具3根刺形亚端腹鬃,受精囊为“C”型。___
A. 人蚤
B. 二齿新蚤
C. 印鼠客蚤
D. 犬栉首蚤
【单选题】
_______不属于栉眼蚤属。___
A. 云南栉眼蚤
B. 方叶栉眼蚤
C. 同源栉眼蚤指名亚种
D. 偏远古蚤
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