热门试题:
[单项选择]下列关于放射性活度的说法中错误的是
A. 活度是在给定时刻，处于特定能态的一定量的放射性核素在单位时间内发生衰变的期望值
B. 活度是在给定时刻，处于特定能态的单位质量的放射性核素在单位时间内发生衰变的期望值
C. 活度的法定单位是贝克(B
D. 活度的旧专用单位是居里(C
E. 1Ci=3.7×1010Bq
[判断题]农业银行国别风险限额管理遵循“先核定先扣占后办理、定性与定量相结合、统一核定、动态调整”的原则。( )
A.正确
B.错误
[单选题]创伤急救的基本原则是（）。
A.A-先固定-再抢救-后搬运
B.B-先抢救-后固定-再搬运
C.C-先搬运-后抢救-再固定
D.略
E.略
F.略
G.略
[单项选择]Our company decided to______ the contract because a number of the conditions in it had not been met.
A. destroy
B. resist
C. assume
D. cancel
[单选题]-B-001 3 2 3
锉削是用锉刀对工件表面进行切削加工,使工件达到要求的尺寸.( )
A.形状
B.状态
C.距离
D.亮度
[T/]
[判断题]BA004要设计出具有高效率的离心泵,一般要注意避免在流道内出现死水区。
A.正确
B.错误
[单选题]无须办理房屋所有权转移登记的是（ ）。
A.房屋租赁
B.受遗赠房屋
C.以房屋出资入股
D.房屋分割导致所有权发生转移
[单选题]下列各项中不属于资产负债表“存货”项目的是（）。
A.库存商品
B.周转材料
C.在建工程
D.生产成本
[单选题]一般情况下，可具有多点触摸的屏幕是（ ）
A.电阻屏
B.红外式屏
C.电容屏
D.超声波式屏
[判断题] ( )钻井队报表中的数据单位应采用工程单位。
A.正确
B.错误
[单选题]ZD6型电动转辙机速动爪落下后与速动片间隙不小于( )。
A.1mm
B.2mm
C.3mm
D.4mm
[单选题][T]A-A-001 4 2 2
控制系统中，( )是开环控制。
A. 定值控制
B. 随动控制
C. 前馈控制
D. 程序控制
[简答题]
计算题：07年某污水处理厂日处理量约为40000m3/d，来水BOD平均为175mg/l，出水为20mg/l，试计3算07年全年BOD的消减量？
[判断题]六氟化硫(SF6)气体化学性能稳定,所以与水或其它杂质成分混合后,在电弧的作用下也不会产生有腐蚀性的低氟化合物。( )
A.正确
B.错误
[单项选择] (77)What do we mean by a satisfactory standard of living Obviously, it must include the basic necessities of life such as food clothing and shelter. To get these necessities on regular basis, a person must have a reliable income. But we have other needs which would probably also be included as basic, such as health and education facilities.
We may think of all of these as our needs. Yet most of us would be far from satisfied if we had nothing more than these which are supplied for us. (78) We all enjoy extra income to spend on things like books, sports or hobbies. Sometimes we save some of this extra income to pay for future expense of this type on holidays. So we must add our wants to our basic needs. Our standard of living is the degree, to which these needs and wants are satisfied.
But as time goes on, what we think of as our basic needs changes. Twenty years ago a television would have been a luxury, and still is in many countries now. Even now we cannot sa
A. having only reliable income
B. having reliable income and extra income
C. having nothing more than food and clothing
D. having nothing more than reliable income
[单选题] 设在部队营区内的车场警卫工作,白天可由( )兼任,夜晚必须派卫兵守卫。
A. 保管员
B. 驾驶员
C. 岗哨
D. 车场值班员
[多选题]关于支票，以下说法正确的是：_________。
A.支票的金额、收款人名称，可以由出票人授权补记。
B.签发现金支票和用于支取现金的普通支票，必须符合国家现金管理的规定。
C.对于现金支票，持票人或收款人直接到出票人开户银行提示付款即可。
D.签发支票必须记载下列事项：表明“支票”的字样、无条件支付的委托、确定的金额、付款人名称、出票日期、出票人签章。
[单选题]夜盲症是由于缺乏
A.抗坏血酸
B.维生素E
C.核黄素
D.维生素A
E.维生素D
[单选题] 常压开仓作业过程,打开仓门后,应对仓内进行通风并( ),确认安全后方可进仓作业。
A.检测有害气体含量
B.检测开挖面情况
C.检测仓内水位情况
D.检测刀具磨损情况
[多选题]以下( )情形不属于 GB/T 1596-2017 标准的粉煤灰。
A.电厂煤粉炉中烟道气体中收集的粉末
B.和煤一起煅烧城市垃圾或其他废弃物时收集的粉末
C.循环流化床锅炉燃烧收集的粉末
D.在焚烧炉中煅烧工业或城市垃圾收集的粉末
[单选题]代谢性酸中毒的最典型表现是( )
A.尿液呈酸性
B.心率加快，血压降低
C.呼吸深快，呼气有烂苹果味
D.严重者神志不清，甚至昏迷
E.面色潮红
[单项选择]
(2)
Some seven or eight hundred years ago, Hangzhou, known as Ling’ an then, was the capital of the Southern Song Dynasty. At that time, watching the tidal bore was already a grand occasion in town when the whole population would turn out for the spectacle. The best time to do this was from the 15th to the 18th of the eighth month of each year. But beginning from about the tenth day of the month, that part of the river bank that offered the best vantage point for tide watching would already be a busy gathering place for little open-air booths anti stalls where vendors piled colourful wares on their carts or boxes. There would be all kinds of snacks and cooked meats in shining pots and pans. The taverns and restaurants would put up multi-coloured lanterns and flags or pennants, displaying meanwhile an attractive array of meat and vegetable dishes with a lot more exotic delicacies on the menu. In the tea-houses would be h
A. painting scrolls
B. displaying plasters
C. folk artists
D. pleasure-seekers
[单选题]站外疏导乘客时，以下描述不正确的是（ ）。
A.A.积极宣传疏导，减少乘客误解，争取乘客理解
B.B.对乘客宣传时要表示出人多，没有办法，只能慢慢排
C.C.限流情况，面对乘客不满，要耐心劝解
D.D.限流情况，面对不冷静乘客，要尽快处理，降低影响范围
[多选题]48.交易磋商程序中必不可少的两个法律环节是（ ）。
A.询盘
B.发盘
C.还盘
D.接受
[单选题]减速地点标设在距施工地点（ ）m。
A.单选题
B.非常简单
C.0
D.20
E.50
F.500
G.800
[判断题]直流泄漏电流测量施加的直流试验电压较高,属于破坏性试验。
A.正确
B.错误
[单项选择]阿特金森的成就动机理论认为（）
A. 求成的动机、成功的概率、成功的诱因价值三者数值越大，则争取成功的行为趋向也越强
B. 任务越难，成功概率就越小，故诱因价值越小
C. 任务越易，成功概率就越大，故诱因价值越大
D. 当一个人有了较高的求成动机水平，成功的概率越大，最有可能做出争取成功的行为
[单选题]䄀.(298462)额定电流为3A的熔丝其熔断电流为( )，要求在10秒以内熔断。(1.0分)
A.A、4A
B.B、4.5A
C.C、5A
D.D、3A
[判断题]所有电气设备的金属外壳均应有良好的接地装置。使用中不准将接地装置拆除,但可对其进行工作。
A.正确
B.错误
[判断题]在道岔转辙部位作业时进行滑床板捣固、改轨距必须通知电务维修人员以防影响道岔正常使用。( )
A.正确
B.错误
[单项选择]（）是自动拉板部分的有。
A. 主梁
B. 液压元件
C. 止推板
D. 链条
[单选题]当隔离开关或接地开关的触头及设备线夹等部位温度为90 ～130℃时，其状态评价应扣(____)分。
A.16
B.24
C.32
D.40
[单项选择]心源性呼吸困难最先出现的是
A. 急性肺水肿
B. 阵发性夜间呼吸困难
C. 劳力性呼吸困难
D. 源性哮喘
E. 端坐呼吸
[判断题] 禁止绝缘斗超载工作。( ) (1.0分)
A.正确
B.错误
