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[单选题]分析用水的电导率应小于()。
A.6.0µS/cm
B.5.5µS/cm
C.5.0µS/cm
D.4.5µS/cm

热门试题:

[判断题] 装配图的特殊表达方法有假想画法、零件的单独表示法、拆卸画法、简化画法。(易)( )
A.正确
B.错误
[单选题]杆塔基础附近开挖时,应在开工前检查杆塔稳定性。若开挖影响杆塔的稳定性时,应在开挖的反方向加装临时拉线,开挖基坑完毕后拆除临时拉线。
A. A.正确
B.B.错误
[单选题]产热效应最显著的是
A.缩宫素
B.肾上腺素
C.去甲肾上腺素
D.甲状腺激素
E.生长素
[单项选择]Questions 11 to 18 are based on the conversation you have just heard.
A. He couldn’t make any sense out of his course.
B. He hasn’t taken more then one philosophy course.
C. He is a philosophy major.
D. He hasn’t taken any philosophy course in that department.
[填空题]DSS中______是面向问题的程序,而______则是面向算法的程序。
[单项选择]


A. on
B. for
C. of
D. to
[判断题]长期超负荷供电容易引起电缆动热稳定性不良。( )
A.正确
B.错误
[单项选择]

Text 2
Last year, America’s Defence Advanced Research Projects Agency, DARPA, thought it would be a good idea to organize a robot race across the Nevada desert. The idea of the Grand Challenge, as DARPA dubbed it, was for autonomous robot vehicles to steer a 227km (142-mile) course and claim a $1 m jackpot. This would be a first step towards DARPA’s ultimate goal of being able to build unmanned self-driving military vehicles and thus keep American troops out of harm’s way on the battlefield.
This year’s crop of 23 entrants were offered an even greater incentive--a $ 2m prize for the win ner. That, plus the intervening 18 months, seems to have done the trick. This time, five vehicles finished the 211kin course. The winner, a modified Volkswagen Touareg dubbed Stanley by its makers, a team from Stanford University, did it in a mere six hours and 54 minutes.
Stanley was, of course, specially hardened by its designers for the rou
A. get totally lost.
B. need to be controlled by people.
C. study and work out its own way.
D. wait for orders to move.

[单项选择]工作风缸用来控制分配阀()的动作。
A. 副阀
B. 主阀
C. 放风阀
[多选题]康宁玻璃公司重新设计了员工的工作,让装配实验室热板的员工被整合成一个整体,而非只贡献于装配的单一部分,这能提高以下那几个工作维度?
A.技能多样化
B.任务的重要性
C. 任务一致性
D. 反馈
[判断题]公安机关在办理治安案件时,对拒绝作证的证人可以传唤
A.正确
B.错误
[单选题]当现场检验电能表误差超过其准确度等级值或电能表功能故障时应在( ) 内处理或更换。
A. 5 个工作日
B. 3 个工作日
C. 5 天
D. 3 天
[简答题]简述支配动车组的定义。
[单项选择]“久卧”最易伤的是()
A. 气
B. 血
C. 肉
D. 精
E. 筋
[单选题]我国城市垃圾的处理方式的基本方式是( )。
A.焚烧场
B.有机堆肥场
C.封闭型填埋场
D.开放型填埋场
[多选题]建设场地征用及清理费包含( )。
A.土地征用补偿费
B.迁移补偿费
C.余物清理费
D.施工场地租用费
E.线路施工赔偿费
[简答题]油品自然损耗有哪些种形式?(5分)
[简答题]妇科超声显像腹部扫查为什么应在膀胱适当充盈时进行?
[单项选择]下列关于嗜铬细胞瘤的叙述中,错误的是()。
A. 位于肾上腺者最多,大多为一侧性,多为良性
B. 肾上腺外嗜铬细胞瘤主要位于腹部,多在腹主动脉旁
C. 特征性的表现是阵发性高血压
D. 出现持续性高血压者不考虑嗜铬细胞瘤
E. 可引起儿茶酚胺性心肌病
[不定项选择题]共用题干 Giant Structures
It is an impossible task to select the most amazing wonders of the modern world since every year more______(1)constructions appear. Here are three giant structures which are worthy of our admiration______(2)they may have been surpassed by some more recent wonders.
The Petronas Twin Towers
The Petronas Towers were the tallest buildings in the world when they were completed in 1999.______(3)a height of 452 metres,the tall twin towers,like two thin pencils,dominate the city of Kuala Lumpur. At the 41st floor,the towers are______(4)by a bridge,symbolizing a gateway to the city. The American architect Cesar Pelli designed the skyscrapers.
Constructed of high-strength concrete,the building______(5)around 1,800 square metres of office space on every floor. And it has a shopping centre and a concert hall at the base.Other______(6)of this impressive building include double-decker lifts,and glass and steel sunshades.
The Millau Bridge
The Millau Bridge was opened in 2004 in the Tarn Valley,in southern France. At the ______(7)it was built,it was the world,5 highest bridge,______(8)over 340m at the highest point. The bridge is described as one of the most amazingly beautiful bridges in the world. It was built to ________ (9) Millau's congestion(拥堵)problems. The congestion was then caused by traffic passing from Paris to Barcelona in Spain. The bridge was built to with-stand the______(10) extreme seismic(地震的)and climatic conditions. Besides , it is guar- anteed for 120 years!
The Itaipu Dam
The Itaipu hydroelectric power plant is one of the largest constructions of its kind in the world.
It______(11)of a series of dams across the River Parana,______(12)forms a natural border between Brazil and Paraguay. Started in 1975 and taking 16 years to complete, the construction was carried out as a joint project between the two______(13).The dam is well-known for both its electricity output and its size. In 1995 it produced 78% of Paraguay's and 25% Of Brazil's______(14)needs. In its construction,the amount of iron and steel used was equivalent to over 300 Eiffel Towers.It is a______(15)amazing wonder of engineering. 10._________
A.much
B.more
C.less
D.most
[单项选择]关于非遗传毒性致癌物的叙述,不正确的是
A. 具有DNA反应活性
B. 在大多数遗传毒理学试验中为非致突变物
C. 经代谢活化可形成亲电子剂
D. 一般具有可检测的阈剂量
E. 作用一般是可逆的,需长期染毒
[单项选择]氧熔剂切割预热焰功率比普通气割高()。
A. 15%~25%
B. 50%
[判断题]防溜控制产生的卸载和紧急制动,停车后需缓解时,司机按压【缓解】键缓解。(监控手册)
A.正确
B.错误
[单项选择]

血液科患者,女,28岁,因急性淋巴细胞性白血病入院,入院查血小板4×109/L,有发热和牙龈出血,给患者输注一个单位机采血小板后,第二天复查血小板6×109/L,牙龈出血症状好转。

此结果提示患者可能是ABO亚型,以下哪项不是ABO亚型血型血清学的判断依据()
A. 红细胞与抗A、抗A1、抗B及抗A、B的凝集强度
B. 红细胞上H物质活性的强弱程度
C. 血清中是否存在抗Al
D. 分泌型人的唾液中A、B和H物质
E. 红细胞的形态不同
[单选题] ⾼温作业可能造成的事故类型是()。(0 .20分)
A. 热灼伤
B. 机械伤害
C. 电流伤害
[多选题]《中国石油天然气集团公司进入受限空间作业安全管理办法》(安全〔2014〕86号)规定,进入受限空间作业许可证应当包括( )等基本信息。
A.作业单位、作业区域所在单位、作业地点、作业内容、作业时间、作业人员
B.作业监护人、属地监督、危害识别
C.安全措施、气体检测
D.作业批准、延期、取消、关闭
[单选题]在水力机械设备上工作,停电措施应该在( )执行。
A.A.设备停止运行或转动以后
B.B.设备运行时
C.C.修中
D.D.修后
[单选题]继电保护装置、安全自动装置和自动化监控系统的二次回路变动时,应按( )进行,无用的接线应隔离清楚,防止误拆或产生寄生回路。
A. 经审批后的图纸
B. 厂家设计图纸
C. 作业指导书要求
D. 工作负责人要求
[单项选择]买方在支付了期权费后,即取得了在合约规定的到期日或到期日之前按协定价格买入或卖出一定数量的相关股票的权利,称之为()。
A. 货币期权
B. 互换期权
C. 利率期权
D. 股票期权
[多项选择]最常用的温标为()。
A. 列氏
B. 摄氏
C. 热力学
D. 华氏
[多选题]根据《银行业金融机构反假货币工作指引》,银行业金融机构反假货币工作信息包括( )。
A.一般信息
B.特殊信息
C.敏感信息
D.重大信息
[简答题]对三相感应电动机铭牌中的额定功率如何理解?
[单项选择]一心多用就是同时跟踪和()几个活动。
A. 管理
B. 督促
C. 监督
D. 检查
[单选题]项目通过在线平台申报时,生成作为该项目整个建设周期身份标识的(____)项目代码。
A.唯一
B.统一
C.专用
D.专有
[填空题]信号系统CBTC正常情况下,在正线及辅助线上,电客车司机按(____)和(____)控制运行及停站时间。
[单选题] 违反自然保护地管理法规,在国家公园、国家级自然保护区进行开垦、开发活动或者修建建筑物,造成严重后果或者有其他恶劣情节的,应当以( )定罪处罚
A. 破坏自然保护地罪
B. 非法占用农用地罪
C. 污染环境罪
D. 破坏性采矿罪
[简答题]生料栽培平菇在气温较高季节如何进行发菌管理?以防出现杂菌污染?
[判断题]晶体管式时间维电器式利用电容充放电过程时间或脉冲计数原理,通过晶体管开关电路的作用,使继电器产生延时动作。
A.正确
B.错误

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