相关试题
【单选题】
为保证行车安全，按《地铁设计规范》规定:实设最大超高，不得大于（ ）。 ___
A. 110mm
B. 120mm
C. 130mm
D. 140mm
【单选题】
我国规定，允许最大未被平衡欠超高，一般为（ ）。 ___
A. 60mm
B. 65mm
C. 70mm
D. 75mm
【单选题】
我国规定，允许最大未被平衡欠超高，一般为75mm，特殊情况为（ ）。 ___
A. 80mm
B. 90mm
C. 100mm
D. 110mm
【单选题】
城市轨道交通的现有运营线，最大外轨超高为（ ）。 ___
A. 100mm
B. 110mm
C. 120mm
D. 130mm
【单选题】
国铁线路最大外轨超高为（ ）。 ___
A. 130mm
B. 140mm
C. 150mm
D. 160mm
【单选题】
允许速度大于120km/h的线路，在直线上顺坡的超高不得大于（ ）。 ___
A. 4mm
B. 6mm
C. 8mm
D. 10mm
【单选题】
允许速度大于120km/h的线路，在直线上顺坡的超高不得大于8mm，其他线路，有缓和曲线时不得大于（ ）。 ___
A. 5mm
B. 10mm
C. 15mm
D. 20mm
【单选题】
允许速度大于120km/h的线路，在直线上顺坡的超高不得大于8mm，其他线路，有缓和曲线时不得大于15mm，无缓和曲线时不得大于（ ）。 ___
A. 15mm
B. 20mm
C. 25mm
D. 30mm
【单选题】
圆曲线最小长度应满足规定，特殊困难地段不应短于( )。 ___
A. 55m
B. 45m
C. 35m
D. 25m
【单选题】
允许速度不大于120km/h线路的极个别情况下，不足25m时，可在直线部分设置不短于( )的相等超高段 ___
A. 25m
B. 35m
C. 45m
D. 55m
【单选题】
反向曲线两超高顺坡终点间的夹直线长度应满足规定，特殊困难地段不应短于。 ___
A. 15m
B. 20m
C. 25m
D. 30m
【单选题】
允许速度不大于120 km/h线路的极个别情况下，不足25m时，正线上可不短于（ ）。 ___
A. 15m
B. 20m
C. 25m
D. 30m
【单选题】
允许速度不大于120 km/h线路的极个别情况下，不足25m时，正线上可不短于20m，车辆段场线上可不短于（ ）。 ___
A. 10m
B. 15m
C. 20m
D. 25m
【单选题】
相邻两线采用反向曲线变更线间距时，若受曲线偏角限制难以采用表7.1.6规定的圆曲线最小长度标准，可采用较短的圆曲线长度，但不得短于（ ）。 ___
A. 55m
B. 45m
C. 35m
D. 25m
【单选题】
允许速度不大于120 km/h的线路在特殊条件下的超高顺坡，可根据具体情况规定，但不得大于（ ）。 ___
【单选题】
无缓和曲线时，则由圆曲线的始终点开始向直线递减，递减率一般不得大于（ ）。 ___
【单选题】
两曲线轨距加宽按1‰递减，终点间的直线长度应不短于( )。 ___
A. 5 m
B. 10 m
C. 15 m
D. 20 m
【单选题】
曲线轨距最大加宽为（ ）。 ___
A. 30mm
B. 25mm
C. 20mm
D. 15mm
【单选题】
城市轨道交通正线的曲线，半径（ ）及以上的均不设加宽 ___
A. 150 m
B. 200 m
C. 250 m
D. 300 m
【单选题】
隧道内正线的曲线因半径均不小于（ ），故不设置加宽。 ___
A. 150 m
B. 200 m
C. 250 m
D. 300 m
【单选题】
直线段，两股钢轨接头相错量不得超过（ ）。 ___
A. 30mm
B. 40mm
C. 50mm
D. 60mm
【单选题】
曲线段，两股钢轨接头相错量不得超过（ ）加所采用的缩短轨缩短量的一半。 ___
A. 30mm
B. 40mm
C. 50mm
D. 60mm
【单选题】
在使用添乘仪添乘线路，每到（ ）m的地方要按一下D键校对里程。 ___
A. 100
B. 200
C. 500
D. 1000
【单选题】
在使用添乘仪添乘线路时，电客车在站台停车时要按遥控器（ ）键停车。 ___
【单选题】
在使用添乘仪添乘线路时，电客车在站台启动时要按遥控器（ ）键。 ___
【单选题】
在使用添乘仪添乘线路时，要按( )键开始添乘。 ___
【单选题】
在更换钢轨时，要根据（ ）计算预留轨缝，确定新轨长度。 ___
A. 气温
B. 室外温度
C. 室内温度
D. 无所谓
【单选题】
新轨高度不得超过线路上的钢轨面（）mm。 ___
【单选题】
换入钢轨与换出钢轨类型不同时，需配备（）夹板。 ___
【单选题】
换入钢轨与换出钢轨类型不同时，需配备（）垫板。 ___
【单选题】
测量轨向时，要用（）米正弦测量。 ___
【单选题】
施工防护施工人员在车站请点登记，在施工区域前后（）m外设置红闪灯，封锁该段线路。 ___
【单选题】
线路巡检员需要携带的（）CM的刚直尺。 ___
【单选题】
线路巡检员需要携带的（）M的卷尺。 ___
【单选题】
正线开通初期（ ）个月内要每24小时巡查一遍。 ___
【单选题】
正线开通初期3个月内要每（ ）小时巡查一遍。 ___
【单选题】
3个月后视情况可改为每（ ）小时巡查一遍。 ___
【单选题】
人工巡查的周期间隔不应超过（ ）小时巡查一遍。 ___
【单选题】
锯轨后的钢轨长度误差应不超过（）mm。 ___
推荐试题
【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
【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
