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[单选题]方钻杆位于钻柱的最上端,两端有连接螺纹, 一般下端为( )。[1分]
A.正旋螺纹
B.反旋螺纹
C.左旋螺纹
D.右旋螺纹

热门试题:

[单选题]当有异物刺入头部或胸部时,以下()急救方法不正确。
A.快速送往医院救治
B.用毛巾等物将异物固定住,不让其乱动
C.马上拔出,进行止血
[单选题]根据《关于加快推进生态文明建设的意见》,生态文明建设的基本方针是( )。
A.节约优先、保护优先、自然恢复为主
B.深化改革和创新驱动
C.重点突破和整体推进
D.绿色发展、循环发展、低碳发展
[单项选择]

男,45岁,因上吐下泻住某医院,每天静脉途径给庆大霉素24万U共9天,近5天来无尿,眼结膜水肿,腹水,下肢水肿。实验室检查:BUN42mmol/L,血清肌酐1.04mmol/L,血清钾6.8mmol/L。

应诊断为()
A. 庆大霉素过敏反应
B. 庆大霉素肾中毒,导致急性肾衰
C. 双输导管结石梗阻
D. 前列腺肥大
E. 原发病导致失水
[多项选择]《政府采购法》中规定,在招标采购中,出现( )情形,应予废标。
A. 出现影响采购公开的违法、违规行为的
B. 符合专业条件的供应商或对招标文件作实质响应的供应商不足3家的
C. 投标人的报价均超过了采购预算,采购人不能支付的
D. 有备选方案的投标人,未按要求注明主选方案的
E. 因重大变故,采购任务取消的
[判断题] 为防雷电波侵入,10kV变配电室每组母线上都装设避雷器。
A.正确
B.错误
[单项选择]在神经症的症状中,不包括()
A. 情绪症状
B. 感觉过敏
C. 妄想
D. 躯体不适症状
[判断题]设备故障发生后,电务人员应积极设法修复,处理室内故障时,应设置驻站联络员;需上线处理时,应设置驻站联络员和现场防护员。
A.正确
B.错误
[单选题]热电阻测温时仪表指示值无穷大,是因为()。
A.热电阻短路
B.接线盒接线端子处有灰
C.低于
D.保护套管内潮湿
[单选题]警冲标应设在两会合线路线间距离为( )m的中间。
A.1
B.2
C.3
D.4
[单选题]《郑伯克段于鄢》的中心旨意是( )
A.再现郑伯克段于鄢的历史事实
B.剖析郑庄公兄弟不和的原因
C.揭露统治阶级的的残酷无情与虚伪
D.歌颂颖考叔的纯孝
[单选题]当出现电气故障时,应及时通知( )。
A.电工处理
B.维修工处理
C.班长处理
D.作业区处理
[多项选择]下列关于海关行政处罚的管辖的说法中正确的是()。
A. 海关行政处罚由发现违法行为的海关管辖,也可以由违法行为发生地海关管辖
B. 两个以上海关都有管辖权的案件,由违法行为发生地海关管辖
C. 管辖不明确的案件,由有海关协商确定管辖,协商不成的,报请共同的上级海关指定管辖
D. 重大、复杂的案件,可以由海关总署管辖
[多选题]常见的反质疑的方法有()
A.缺乏法律和事实依据,质疑不成立
B.涉及商密不予公开
C.说明成本测算方法
D.出具第三方机构的检测报告
[多选题]下列( )车辆在执行紧急任务时可以使用警报器标志灯具。
A..警车
B..消防车
C..救护车
D..工程救险车
[单选题]下列叙述中,不会导致给水硬度高的是( )。
A. 炉水混浊
B. 凝汽器泄露
C. 疏水硬度大
D. 除盐水有硬度
[多选题]按照标的物的不同信托可以分为()
A.资金信托
B.实物信托
C.债券信托
D.担保信托
[单项选择] 请根据下面短文回答下列题:
No one wants to be caught in the rain without an umbrella. Umbrellas come in different shapes and sizes. Many of them can be put into bags in case of a sudden rain. Just about everyone owns an umbrella, but not many of us give them a second thought. People don’t know exactly where the first umbrella came into being. Some say Egypt
(埃及) while others say China. What is for sure is that they’ve been around a very long time. They weren’t used to protect people from the rain, however. They were used to keep people from the sun.
Women were the first people to carry umbrellas. In 1750, an Englishman decided to carry an umbrella everywhere he went, and he became the center of people’s talk. Not caring about the laughs of those around him, he carried his umbrella for 30 years. Then, it became OK for men to carry umbrellas.
Because they were firstly made of wood, umbrellas were not only expensive, but also difficult to use. In 1852, Samuel Fox made
A. large
B. small
C. Doesn’t say.
[单选题]阻容式湿度检测仪对示值误差的要求为( )
A.不超过±0.6℃
B.不超过±2℃
C.≤30μL/L 时,不超过±1.5μL/L
D.>30μL/L 时,不超过±5%
[单项选择]财政法律关系的内容是指( )。
A. 财政行为和财政资金
B. 企业和个人
C. 经济行为和行政行为
D. 财政法津关系的主体所享有的财政权利和必须承担的财政义务
[填空题]马克思主义站在人民的立场探求人类自由解放的道路,坚持一切以()为中心的价值追求,以实现最广大人民群众的根本利益为价值导向。
[单项选择]Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.


What’s the relationship between the two speakers
A. Customer and agent.
B. Driver and passenger.
C. Boyfriend and girlfriend.
D. Newly-found friends.
[多选题]下列哪些贷款需要执行封闭运行管理?( )
A.中央储备粮贷款
B.地方储备粮贷款
C.粮食调控贷款
D.粮食收购贷款
E.粮食调销贷款
[单项选择]药物作用的两重性指的是( )
A. 副作用和毒性反应
B. 过敏反应和毒性反应
C. 治疗作用和毒性反应
D. 预防作用和不良反应
E. 防治作用和不良反应
[简答题]今有5A的电流通过100m长和温度为25℃的铜线,铜线上的电势降落(即铜线两端的电势差)为2.4V,求铜线的横截面积。(已知ρ0=1.6×10-8Ω·m,α=4.3×10-3/℃)
[单选题]在分光光度法选择参比溶液时,如果显色剂有色,待测试样无色,常选择()。
A.溶剂参比
B.试剂参比
C.样品参比
D.褪色参比
[填空题]通过抽样得到的用以推断总体特征的那个“部分”,在统计学上称为()。样本中所含的单位数,在统计学上称为样本大小,也叫做()。
[判断题]依据《中国南方电网有限责任公司电力安全工作规程》6.7.1.2 规定:作业人员离开工作现场,工作票所列安全措施不变,宜办理工作间断,但每次复工前应检查安全措施正确完好。( )
A.正确
B.错误
[单项选择]

One afternoon, my son Adam asked me," Are all people the same even if they are different in color"I thought for a minute, and then I said, "I’ll explain, (1) you can just wait until we make a quick (2) at the grocery store. I have something (3) to show you. "At the grocery store, we (4) some apples-red,green and yellow ones. Back home. I told Adam,"It’s time to (5) your question. "I put one apple of each (6) on the table. Then I looked at Adam, who had a (7) look on his face."People are like apples. They come in all (8) colors, shapes and sizes. On the (9) , some of the apples may not (10) look as delicious as the others. "As I was talking, Adam was (11) each one carefully.Then, I took each of the apples and peeled(削皮) them, (12) them back on the table, but (13) a different place."Okay, Adam, tell me which is which. "He said, "I (14) tell. They all look the same now. " "Take a bite of (15) See if that he
A. each one
B. each other
C. the other
D. one other

[不定项选择题]10个月男婴,9kg。发热呕吐腹泻2天,大便蛋花汤样,无腥臭味,尿量明显少。精神萎靡,皮肤弹性差,眼凹陷,唇樱红,四肢凉,诊断为婴儿腹泻,血钠132mmol/L 第一天补液种类应选择
A.2:1液
B.2:3:1液
C.维持液
D.1.4%碳酸氢钠
E.10%葡萄糖液
[判断题]对于可卸下的轮椅用锂电池,旅客可携带1块不超过300Wh的备用锂电池,或2块均不超过160Wh的备用锂电池。
A.正确
B.错误
[多选题]HMI中信号机机柱显示( )表示进路接近区段被占用,未占用时显示( )。
A.A.红色
B.B.绿色
C.C.黄色
D.D.蓝色

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