单选题
发布日期:2020-12-11
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采样时间(大气监测)是指采集大气污染物样品的时间。常规大气监测的采样时间,通常与常规气象观测时间相同,以便寻求大气污染与气象条件的关系,为大气污染预报和确定污染排放标准提供依据。
汽车的制动就是刹车,制动力就是可达到的最大滚动摩擦力,因为由滚动变滑动时摩擦力会突降,即最大滚动摩擦力比滑动摩擦力大,这就是为什么汽车有防抱死系统制动性能是汽车主要性能之一,它关系到行车安全性。
测站【instrument station】指的是外业测量时安放仪器进行观测的地点。水利水电的测站是遥感测站,包括遥测水文站、遥测水位站、遥测雨量站。
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Cloze 9 There was a king who had twelve beautiful daughters. They 1 in twelve beds all in one room and when they went to bed, the 2 were shut and locked up. However, every morning 3 shoes were found to be quite worn through as if they had been danced in all night. Nobody could make out how it happened, or 4 the princesses had been. So the king made it 5 to all that if any person could discover the 6 and find out where it was that the princesses danced in the night, he would have the 7 he liked best to take as his wife, and would be king 8 his death. But whoever tried and did not succeed, after three days and nights, would be 9 to death. A prince from a nearby country soon came. He was well entertained, and in the evening was taken to the chamber (大房间) next 10 the one where the princesses lay in their twelve 11 . There he was to sit and watch where they went to dance; and, in order 12 nothing could happen without him hearing it, the door of his 13 was left open. But the prince soon went to sleep; and when he 14 in the morning he found that the princesses had all been dancing, 15 the soles of their shoes were full of holes.
处理DS6-K5B型计算机联锁系统停机故障时,错误代码8A的含义是指()。
转K6、K2型交叉支撑装置组装后,须在转向架正位检测台上进行正位状态检测,4个导框中心的对角线长度之差不大于()。
有关洗手的注意事项,错误的是()
红学索隐派是指研究《红楼梦》的一个派别,又称政治索隐派。所谓索隐即透过字面探索作者隐匿在书中的真人真事。索隐派的主要手段是大作烦琐的考证,从小说的情节和人物中考索出“所隐之事,所隐之人”。根据以上定义,下列各项属于索隐派的是( )。
简述我国宪法基本原则中的法治原则。
()就是中华民族近代以来最伟大的梦想。
转向架与车体的斜对称载荷、构架扭曲、弹簧刚度不一致、轮径不一致、前后心盘不平行或对角旁承压死等都能引起轮对一侧减载而造成脱轨。
慢性肾炎的主要病变部位是()
天线的VSWR合理的范围为()
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计算机控制系统按控制系统的功能及结构特点分类为计算机巡回检测和操作指导系统、直接数字控制系统、()6种主要类型。
根据计算机在控制中的应用方式,把计算机控制系统分为四类: 1)() 2)直接控制系统 3)监督计算机控制系统 4)()
检测站计算机控制系统的制动力采样时间应介于()s。
检测站计算机控制系统在尾气检测时,需判断车辆的(),并给出相应检测提示。
检测站计算机控制系统主控系统运行后,对()接口的检测设备应打开相应的数字端口或串行通讯端口。
检测站计算机控制系统主控系统运行后,对()接口的检测设备应打开相应的A/D通道,将模拟输入信号调零。
检测站计算机控制系统应提供检测标准限值的查询、修改界面。
检测站计算机控制系统的测量对象包括()。
检测站计算机控制系统的设计,应遵循硬件设计的基本方法。
检测站计算机控制系统的阻滞力采样时间为()s。