51题库考试学习网
最新考题
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水平测量的数据分析的目的?
06-05
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有机玻璃长期使用后,其裂纹深度虽然相同,但强度值下降则不同。() 此题为判断题(对,错)。
06-05
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拉铆完的环槽铆钉,如果钉头与构件不靠合,允许将钉头打靠。() 此题为判断题(对,错)。
06-05
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使用工艺螺栓.工艺螺栓钉和金属压紧器时,应带有非金属垫圈或垫片以防止损伤零件表面。() 此题为判断题(对,错)。
06-05
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APU供电时,接通地面电源,电源系统自动()。 A.先切断APU电源,再接通地面电源B.先接通地面电源和断开APUC.同时接通地面电源和断开APUD.不分先后,随机接通地面电源和断开APU电源
06-05
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发动机灭火系统由什么汇流条供电()? A、备用直流汇流条B、1#直流汇流条C、电瓶汇流条D、热电瓶汇流条
06-05
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你什么时候使用起落架控制手柄 上的超控扳机?() A.把控制手柄从OFF(中立)位移到DOWN(放下)位B.把起落架的液压源从A系统变为备用系统C.如果控制手柄锁定线圈故障,要把控制手柄移到UP(收上)位D.为了阻止起落架转换活门工作
06-05
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下面哪个部件给逻辑控制组件(LCM)提供污水箱水量满信号()。 A.2个点状水位传感器B.连续水位传感器C.只有1个点状水位传感器D.1个点状水位传感器和连续水位传感器
06-05
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出现火警时,应该如何使用灭火手柄?
06-05
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应急逃生设备有哪些?
06-05
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每个系统都有自己的液压油箱,系统正常的工作压力为()A、2000磅/平方英寸B、3000磅/平方英寸C、4000磅/平方英寸
06-05
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在翼型后部产生涡流,会造成().A、摩擦阻力增加B、压差阻力增加C、升力增加D、升力减小
06-05
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保留工作项目是指在航空器计划维护工作中,因()等原因不能正常地计划完成的维修工作项目。
06-05
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航空器经过C检或相当级别以上维修工作后应已完成().
06-05
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正常情况下偶尔短时出现爆炸性混合物的场所可划为2级危险区域。此题为判断题(对,错)。
06-05
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离心泵的工作原理是通过( )的叶片产生的离心力来实现的。A.高速旋转B.震动C.往复运动D.搅动
06-05
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发生一般差错,__________。A.应立即报告上一级通信导航部门,直至民航总局空管局。B.应及时报告上一级通信导航部门,直至地区管理局空管局,并抄报总局空管局通信导航部门。C.由台站领导组织处理并向上级报告。
06-05
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以下符合陪同的安全责任的是:A.陪同人员对持证人的行为负责B.陪同人员对持证人在控制区内的行为负责C.陪同人员应全程落实陪同责任D.陪同人员仅对持证人进入控制区落实陪同责任
06-05
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直升机诱导旋转阻力产生的原因是()A.旋翼向下排压空气使空气加速向下流动B.空气与旋产生摩擦C.桨叶前缘阻挡空气和后缘涡流区的影响
06-05
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航空器驾驶员执照笔试最低通过成绩为()A.60分(百分制)B.80分(百分制)C.3分(五分制)
06-05
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下列( )情况,旅客不能持婴儿票旅行。A.旅客开始旅行时不满两周岁B.旅客原定航班旅行之日不满两周岁,后改乘另一航班,实际出发之日已满两周岁C.AB全对D.AB均不对
06-05
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We believe that sales will increase soon; (), production costs will be going up also.A、soB、thusC、on the other handD、however
06-05
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The company in question does steady export business, () satisfactory results in overseas markets.A、showB、to showC、showedD、showing
06-05
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There are approximately 500 () now in operation in the United States.A、savings banksB、saving bankC、saving banksD、savings bank
06-05
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Ms. Hansen is () than the office manager she replaced.A、much more businesslikeB、many more businesslikeC、much business like
06-05
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Our factory is much more productive now. This year’s production is five times as much () it was ten years ago.A、whatB、asC、thatD、than
06-05
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The author of the book lived in ().A、the early 30B、the early 30’sC、early 30D、earlier 30’s
06-05
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Having been familiar with his ability, ().A、the manager was assigned a challenging taskB、the manager assign a challenging taskC、the board assigned him a challenging taskD、a challenging task was assigned to the manager
06-05
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Only one of the job applicants can keyboard as fast as ().A、mineB、myselfC、ID、me
06-05
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Write a memo in about 50 words. You received a letter from a British customer complaining of the late delivery of their Order No.366.Then you looked into the matter and found it was the fault of your dispatch department.Write a short memo to your assistant, Jack Zhou. ·Ask him to visit your dispatch department and urge them to dispatch the order. ·Specify the goods, quality, and the deadline for dispatch. ·Add any relevant information you can think of.
06-05
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慢性唇炎发病的主要原因是()A、饮食不当B、心理障碍C、舔唇不良习惯D、高血压E、营养缺乏
06-05
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评定根管预备器械性能的指标如下。除外()A、穿透力B、器械弹性C、侧壁切割力D、带碎屑能力E、工作端的长短
06-05
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圆锥型套筒冠固位体金属材料首选()A、高含金量合金B、铜基合金C、钛合金D、镍铬合金E、钴铬合金
06-05
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女性患者,35岁。左下颌智齿反复肿痛伴开口受限2月。抗炎治疗有效,但不能根治。检查见左咬肌区弥漫性肿胀,无波动感。应诊断为()A、翼下颌间隙感染B、颞下间隙感染C、下颌支边缘性骨髓炎D、下颌骨硬化性骨髓炎E、下颌骨中央性颌骨骨髓炎
06-05
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We regret () that we can’t accept your offer.A、of sayingB、for sayingC、about sayingD、to say
06-05
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We should appreciate it if you would quote your best prices C.I.F. New York for the envelope openers () in China Daily.A、advertisingB、advertiseC、advertisedD、advertises
06-05
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To qualify for a promotion, ()to exceed the quota.A、the best thing he could do wasB、he did his bestC、all he could do wasD、his best thing was
06-05
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The person to win this year's Business Man is thought to be ().A、hisB、heC、themD、they
06-05
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Write a memo in about 50 words. You are a department manager. A new copying machine has been installed in your department. Write a memo to tell your staff members to be careful in using the newly-installed photocopier. Your instructions should include the following particulars: ·Ask them not to use it for too long at a time. ·Ask them to switch off the machine after use. ·Encourage them to offer suggestions for the care of the machine.
06-05
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When you write, () all the necessary information.A、remembering to includeB、remember includingC、remember and includeD、remember to include
06-05
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We are pleased to tell you that the goods () in your order have been sent to you today.A、includingB、includedC、includesD、to include
06-05
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We are pleased to tell you that the goods () in your order have been sent to you today.A、includingB、includedC、includesD、to include
06-05
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Most people consider () to be responsible citizens.A、himselfB、themselvesC、themD、themselfs
06-05
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() quality and prices are satisfactory, there are prospects of good sales here.A、ProvidedB、EvenC、ThoughD、Unless
06-05
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The bigger your audience,() complicated communication channel choice becomes.A、moreB、it is moreC、the moreD、the most
06-05
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I have received () professional training.A、three-monthB、three-monthsC、athree-monthD、three-month’s
06-05
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We are () exporters of all kinds of Chinese goods.
06-05
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用所给的词和词组写出符合逻辑的句子。 inform us/please/at once/so that/of your telex number/we will/reply to/be able to/your query
06-05
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The President has asked for budget cuts, and Congress has indicated () willingness to legislate some of them.A、itsB、theirC、it’sD、his
06-05
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Write a memo in about 50 words. You are the Personnel Manager of a company, and have been approached by your IT Department to recruit three new members of staff. Write a memo to Miss Kate Bush, the Manager of the IT Department, ·informing her you have received over 100 applications and have selected 10 candidates for interview, ·telling her you will write to the candidates inviting them for interview, and ·asking her to tell you the time and the place of the interview.
06-05
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The () news is that the delegation will arrive at 6∶30 this afternoon.A、up to the minuteB、up-to-the minuteC、up-to-the-minuteD、up-to the minute
06-05
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A chart showing all staff positions and responsibilities () prepared by the Vice President.A、wasB、hasC、wereD、have
06-05
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It might have been () who made the bid.A、himselfB、hisC、himD、he
06-05
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用所给的词和词组写出符合逻辑的句子。 of/a travel agency/the/Marketing Manager/specializing in holidays/pleased to/would be/hear of/in airfares/a reduction
06-05
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用所给的词和词组写出符合逻辑的句子。 at this stage/removed from/of the process/it is/that/any products/are/the assembly line/of inferior quality
06-05
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几岁以后的吮咬习惯属于口腔不良习惯()A、1岁B、3岁C、6岁D、12岁E、18岁
06-05
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下列选项中可复性牙髓炎()A、双氧水B、麝香草C、甲醛甲酚D、浓台氏液E、氢氧化钙制剂
06-05
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龋病的治疗方法有()A、化学疗法B、窝沟封闭C、再矿化疗法D、修复性治疗E、根管治疗
06-05
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不适合作为全口义齿二次印模法的终印模材料是()A、藻酸盐B、硅橡胶C、印模膏D、聚醚橡胶E、氧化锌丁香油印模材料
06-05
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四岁儿童,因发现龋齿就诊。检查发现右下第二乳磨牙近中邻面深龋,去腐过程露髓,疼痛应考虑以下处理方法()A、活髓切断B、根管治疗C、间接盖髓D、干髓术E、银汞充填
06-05