更多“分析和综合也是运动方向相反的思维活动。分析的本质是（），从认”相关的问题
右手定则手心对的方向是（)方向。
A.磁感应强度
B.导体运动
C.感应电动势
D.感应电流
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防火墙可以阻止感染了病毒的软件或文件的传输。
A．正确
B．错误
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Questions 下列各are based on the following passage. 3D glasses help doctors perform. invasive surgery when their hands are obscured from view. Moviegoers arent the only ones wearing 3D glasses nowadays—doctors could benefit from them, too, a new study suggests. In the past, doctors have been skeptical of using 3D technology in their work, preferring to rely on their own experience. But that may change, thanks to improved 3D glasses and even glasses-free systems .Funded by industry sponsors, the study of 50 surgeons using the new technology showed improvements in surgical precision and speed. 'While the technology still requires some free-tuning, technology without the need to wear special glasses will increase the popularity of 3D systems in operating rooms,' study leader Ulrich Leiner of the Fratmhofer Heinrich Hertz Institute (HHI) in Berlin said in a statement. Improvements to screens are driving developments in 3D technology. High-definition screens are already available. The next step is ultra-high definition, with a sixteen fold improvement in resolution, according to study co-author Michael Witte of HHI. To evaluate whether new 3D technology was ready for hospital applications, researchers invited surgeons from the Klinikum rechts der Isars surgical hospital to test it out. A leading endoscope manufacturer and an international display company funded the study. The surgeons tested four different systems: 2D, 3D with glasses, 3D without glasses and a mirror-based 3D system. The glasses-free model relied on an eye-tracking camera system that delivered separate images to each eye, creating a 3D effect in the brain. The images came from endoscopic cameras used in surgery. The doctors practiced a simulated, routine surgical procedure in which they sewed up a wound in a model patients stomach using a needle and thread. Just as in a minimally invasive surgery, their hands were obscured from view and they relied on the screen to see what they were doing. 'The results were astonishing,' Hubertus Feuner, of the Klinikum rechts der Isar university hospital in Munich, said in a statement. The winning surgeon performed the procedure in 15 percent less time and with considerably increased precision, Feuner said. The most surprising thing was that not only young surgeons benefited, but experienced surgeons also, according to the researchers. The winning doctor has worked at the hospital for more than 30 years and has conducted thousands of operations. The surgeons in the study rated the 3D glasses system the highest, and the glasses-free system as comparable to the 2D one. Once the technology is widely available, will doctors begin using it. 'Theres no doubt that 3D will be a commodity in the future.' Witte said. The studys findings will be presented at a congress of the Association of German. Surgeons in Berlin in April. The findings have not been published in a scientific peer-reviewed journal. What can be inferred about 3D glasses from the second paragraph?A.Doctors usually have a poor eye sight.B.Moviegoers often wear 3D glasses to watch films.C.Some doctors are moviegoers.D.Moviegoers know how to perform. surgery.
A.FundedB.'C.DoctorsD.B.MoviegoersE.C.SomeF.D.MoviegoersG.
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锅炉的辐射受热面积与对流受热面积之和称为锅炉的总受热面。
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超声背向散射与下列哪种因素有关（）。
A . 整个测量系统
B . 组织内在的散射特性
C . 以上二者都有关
D . 以上二者都无关
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货币政策时滞包括（）
A. 内部时滞
B. 外部时滞
C. 认识时滞
D. 理论时滞
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企业年金方案生效需要的流程是（）。
A.提交职工大会或者职工代表大会讨论通过B.报送主管部门C.主管部门自收到备案材料15日内无异议D.报送人力资源社会保障行政部门E.人力资源社会保障行政部门自收到备案材料15日内无异议
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短时记忆的编码方式为（）。
A.语言文字材料是语音的记忆
B.语言文字材料是听觉的记忆
C.非语言文字材料是形象的记忆
D.对非语言文字的材料是程序性的记忆
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女，20岁。转移性右下腹痛5天，体温37℃，右下腹肌稍紧张，可触及8cm×5cm包块伴压痛，下列哪项处理是不合适的（）
A.中药辅助治疗 B.可食流质饮食 C.抗生素应用 D.行阑尾切除术 E.针灸或理疗
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在操作沿6m拉梯铺设水带时，架梯至第二层窗台，梯子上端应超出窗台（）个梯磴。
A、分水口拖出50cm
B、楼层内机动水带少于5m
C、水带挂钩高度低于第7磴
D、未用水带挂钩保护水带
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现货交易、远期交易、期货交易三者之间的联系包括______。
A.远期交易属于现货交易，是现货交易在时间上的延伸
B.期货交易属于现货交易，是现货交易在时间上的延伸
C.期货交易与远期交易的联系主要表现在两者均为买卖双方约定于未来某一特定时间以约定价格买入或卖出一定数量的商品
D.期货交易是一种高级的交易方式，它以现货交易为基础
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（）是指专业技术人员在政务活动的过程中，履行对公众的责任，信守对公众的承诺的行为表现。
A . 社会诚信
B . 商务诚信
C . 政务诚信
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生产过程中静电放电失效约90%通常无法在生产过程中检测出的失效，这些失效将会导致公司的产品品质下降，成本提高，客诉增多，信誉受损，该失效模式称之为（）
A.突发性失效B.潜在性失效C.静电击穿失效
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