更多“当出现列车占用丢失情况时，TDCS/CTC系统的站场图界面上”相关的问题
某天文望远镜物镜孔径为6m，取工作波长为550nm，其分辨极限角为多少弧度？（）
A.1.12×10-7
B.2.24×10-7
C.5.60×10-8
D.9.18×10-8
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某企业2013年9月1日销售商品，并于当日收到面值50000元、期限3个月的银行承兑汇票一张。12月10日，将该票据背书转让给A公司以购买材料。所购材料的价格为45000元，增值税率为17%，运杂费350元。则企业应补付的银行存款为（）元。
A.5000
B.4500
C.3000
D.2650
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在观察和测量研究对象时方法不正确产生的偏倚，称为（）。
A.选择偏倚
B.回忆偏倚
C.测量偏倚
D.失访偏倚
E.随意误差
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男性，42岁，半个月前咽痛、咳嗽，1周来水肿、尿少、乏力。化验结果：：Hb95g/L，尿蛋白(+++)，尿沉渣镜检RBC5～10/HP，血肌酐442μmol/L，尿素氮32mmol/L，B超显示双肾增大。该患者最可能的临床诊断是
A．急性肾小球肾炎B．急进性肾小球肾炎C．慢性肾小球肾炎D．IgA肾病
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新婚夫妻都是独生子女，家庭年收入10万元。预计养一个小孩(不包括学费)一年要2万元，抚养23年。从幼儿园到大学毕业的学费现值为14万元。夫妻两人的年生活费4万元，预计婚后工作30年但生活50年，假设
A．不能，10.67
B．不能，13.45
C．能，9.32
D．能，8.56
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As Ford Motor’s board of directors gathered to hold its quarterly meeting Thursday, speculation was growing that the world’s No. 2 automaker was prepared to acquire the automotive operations of Sweden’s Volvo. Merger (合并) speculation that has been widespread throughout the industry for months has focused on a possible Volvo-Ford linkup since a report last week that Volvo had hired a Wall Street investment bank to explore a possible sale. Ford’s board meeting was to be held in Dearborn, the Detroit suburb where Ford is headquartered. Chief spokesman Vaughn Koshkarian declined to comment on the agenda or the Volvo rumors. President Jac Nasser, speaking at an industry conference Tuesday night, also declined to say where Ford was negotiating with Volvo. But Nasser again said Ford was open to using its more than $ 20 billion cash reserve to expand the company’s global reach. Last year’s acquisition of Chrysler by Daimler-Benz led to a panic of talks among automakers looking to strengthen their position in an industry beset (困扰) with too much production capacity worldwide. The conventional wisdom is that smaller automakers will be ill-equipped to compete in the 21st century as the industry becomes dominated by several international automakers. Volvo, one of the world’s smaller automakers, produces less than 500,000 vehicles annually. Last year it sold 100,227 cars in the United States, one of its largest markets. Ford reportedly has been courting Nissan Motor which is in debt as well, and turned down an offer last month for a 20% share in the Japanese automaker. Ford also lost in bidding late last year for financially troubled Kia Motors of Korea. Analysts (分析家) say Ford and Volvo are a better fit. "The Volvo thing is more practical than anything else," said analyst David Healy of Burnham Securities. "Ford, which is becoming good at cost-effectively developing a variety of very different cars with the same basic chassis (底盘) and major parts, could help Volvo expand its product line," Girsky said. "If you could bring a premium price," he said, "Ford has similarly expanded Jaguar’s vehicle line since it bought the British Luxury automaker in 1989." Girsky, however, does not expect Ford to overbid for Volvo. "They had every opportunity in the world to buy Kia Motors and they walked away from it because the price got too high," he said. "I don’t think Ford needs Volvo; it would be nice to have Volvo, but only at the right price."
A．Its last year’s acquisition of Chrysler led to a panic of talks.B．It is planning to acquire British luxury automaker Jaguar.C．It has acquired Nissan by constantly paying debt for Nissan.D．It has failed in acquiring financially troubled Kia of Korea.
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出租汽车计价器的主要误差来源是（）。
A . A、车辆的型号
B . B、车辆的大小
C . C、轮胎的大小
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在机械加工表面质量中，表面的微观几何性质主要是指表面粗糙度。（)
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膀胱位于盆腔内，有（）的作用。
A.排尿
B.帮助消化
C.暂时贮存尿液
D.调理肾脏
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以下哪些房屋不能办理网签手续？（）。
A.未办理央产上市登记的央产房
B.产权归属不明确的房屋
C.被法院查封的房屋
D.无不动产权证书的房屋
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下列叙述中，属于细胞免疫的是[ ]A．皮肤和黏膜组成保卫人体的第一道防线B．体液中杀菌物质和吞噬细胞组成保卫
下列叙述中，属于细胞免疫的是 [ ] A．皮肤和黏膜组成保卫人体的第一道防线 B．体液中杀菌物质和吞噬细胞组成保卫人体的第二道防线 C．由浆细胞产生抗体，抗体与病原体结合，从而抑制病原体的繁殖或对人体细胞的黏附 D．效应T细胞与被抗原入侵的宿主细胞密切接触，使宿主细胞裂解死亡
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结构性能检验是针对结构构件的哪些性能进行检验？
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