【判断题】
在列车运行速度不超过120 km/h的区段，当两架信号机间的距离小于400 m时，前架信号机的显示，必须完全重复后架信号机的显示
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相关试题
【判断题】
发车信号辨认困难的车站，在便于司机瞭望的地点可装设进路表示器
【判断题】
设有两个及以上车场的车站，转场进路应设进路色灯信号机
【判断题】
最高运行速度不超过140 km/h的机车，机车信号设备与列车运行监控装置（LKJ）结合使用
【判断题】
机车信号的显示，应与线路上列车接近的地面信号机的显示含义相符
【判断题】
机车停车位置，应以地面信号机或有关停车标志为依据
【判断题】
LKJ产生的列车运行记录数据是行车安全分析的重要依据，任何单位和人员不得更改
【判断题】
在列车全部通过道口前，道口信号应始终保持禁止通行状态，自动栏杆（门）应始终保持关闭状态
【判断题】
列车有线、无线调度电话均准许机车（动车组）司机加入通话
【判断题】
在无线列调区段，列车无线调度电话系统准许列车调度员、机车（动车组）调度员、车站值班员、助理值班员、机车（动车组）司机、列车长等加入通话
【判断题】
司机、随车机械师（车辆乘务员）、列车长、乘警均应配备无线对讲设备，在GSM-R区段运行时还应配备GSM-R手持终端
【判断题】
交流传动机车定期检修的修程分为大修、中修、小修和辅修
【判断题】
机车检修周期应根据实际技术状态和走行公里或使用时间确定
【判断题】
牵引列车的机车在出段前，必须达到运用状态，主要部件和设备必须作用良好，符合铁路总公司有关机车运用、维修的规定
【判断题】
列车或单机在车站时，所有乘务人员应按车站值班员的指挥进行工作
【判断题】
列车运行，原则上以开往北京方向为上行，反之为下行
【判断题】
列车须按规定编定车次。上行列车编为双数，下行列车编为单数
【判断题】
有关行车人员必须执行列车调度员命令，服从调度指挥
【判断题】
半自动闭塞区间，超长列车头部越过出站信号机（未压上出站方面的轨道电路）发车时，司机在得到车站值班员的同意后，即可按规定发车
【填空题】
1、活塞的冷却方式有：喷射冷却、振荡冷却、___三种。
【填空题】
2、辅助机油泵的功能是从油底壳吸入机油，使机油进入机油热交换器进行___,然后送到柴油机内。
【填空题】
3、柴油机启动时油水温度不得低于___。
【填空题】
4、16V240ZJB型柴油机机油预热循环油路是：油底壳→辅助机油泵→逆止阀→机油滤清器→___→柴油机主循环油路→油底壳。
【填空题】
5、更换联合调节器工作油时，往联合调节器内加的工作油或清洗用柴油，均须经___ 过滤并经加油口滤网慢慢加入调节器内。
【填空题】
6、柴油机增压压力不足，将使气缸内空气充量减少，排气温度___，增加燃油消耗。
【填空题】
7、柴油机正常停机时油水温度在___℃之间较好。
【填空题】
8、多缸柴油机曲轴的各曲柄按一定规律、一定角度位置的布置方式称为___。
【填空题】
9、活塞在进气冲程上止点前42°20′曲轴转角时，该缸进气凸轮使___的升程按技术要求为0．38mm，这一数值叫做0．38尺寸。
【填空题】
10、活塞环与环槽间隙过大时，会造成泵油量增大，使过多的机油窜入___，既浪费机油，又易产生积炭。
【填空题】
11、喷油器喷油压力调整过高，不仅功率损失大，而且会引起本身工作条件恶化，影响其使用寿命和工作的___ 。
【填空题】
12、在联合调节器的功调滑阀回油油路中，分别设有增载和减载针阀，其作用是在回油腔内形成一定的背压，以增加功率调节过程中的___。
【填空题】
13、机车喷机油的主要原因一是机油进入气缸，二是___漏油。
【填空题】
14、联合调节器功率调节系统的作用是在不改变柴油机转速、供油量的条件下，调节___励磁电流的大小，以改变牵引发电机的输出功率，从而使柴油机功率输出恒定。
【填空题】
15、柴油机启动后，冷却水温上升很快的原因主要是主循环系统内___。
【填空题】
16、柴油机运用中，发现膨胀水箱涨水时，可逐缸停止___，并打开示功阀，检查水箱是否涨水。
【填空题】
17、运行中差示压力计CS动作造成柴油机停机后，若发现加油口盖处冒燃气或柴油机抱缸，这时不要盲目打开曲轴箱___盖或启动柴油机。
【填空题】
18、冷却系统的功用是保证柴油机气缸套、气缸盖、增压器、中冷器及___得到适当的冷却。
【填空题】
19、柴油机曲轴自由端装有___、曲轴齿轮、簧片硅油减振器和万向轴。
【填空题】
20、东风4B型机车柴油机最低稳定工作转速___。
推荐试题
【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
【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_____。___
