更多“已知某系统的输入、输出关系为(其中x(0)为系统初始状态，f”相关的问题
管理信息价值的不确定性表现在( )。
A、同一信息不同时间有用性不同
B、同一信息在不同地区有用性不同
C、同一信息对不同企业有用性不同
D、信息价值的不确定性与信息使用者的数量有关
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带电作业和加压试验的工作，专职监护人只对安全负责，不得参加班组工作。()
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下列操作中不属于域完整性约束的是
A．为属性添加取值范围约束
B．设置字段不能为空
C．设置索引
D．设置字段的默认值
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20世纪30年代的经济危机，促使各国政府纷纷进行政策调整，资本主义运行机制由此发生重大变化。阅读材料，回答问题。材料一1929～1933年主要资本主义国家工业生产和失业情况材料二1933年，美国政府成...根据材料一概括1929～1933年资本主义世界经济危机的影响。
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新疆维吾尔自治区宗教团体、新疆维吾尔自治区宗教活动场所或者个人不得有（）行为。
A.擅自“放口唤”、派宗教主持、恢复或者变相恢复宗教封建特权 B.接受境内外组织或者个人的指令从事宗教教务活动 C.接受国内组织或者个人的册封、委任、荣誉称号 D.自封传道人并发展教徒、建立宗教组织
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一容器内储有1mol 氢气和1mol 氦气,若两种气体各自对器壁产生的压强分别为 和 ,则两者的大小关系为 ( )
A. 〉 B. 〈 C. = D. 不能确定
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某一线路传输速率为2000b/s，有2个用户共用此线路，当采用预分配复用方式时，每个用户可能达到的最高传输速率是（）。
A.1000b/s B.2000b/s C.4000b/s D.8000b/s
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接触器管理组件（ECMU）可提供无中断电源转换，该功能（）。
A.避免汇流条电源在地面和空中正常形态下电源转换时中断
B.避免汇流条电源在地面和空中，正常或紧急形态下电源转换时中断
C.避免汇流条电源在地面正常形态下电源转换时中断，空中时该功能被抑制
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Please don't run ______ fast.
A．so
B．much
C．fairly
D．more
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确定强制招标项目的因素不包括（ ）。
A．项目的特殊性
B．项目具有公共属性
C．招标费用的经济性
D．项目的规模标准
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心血管系统常用的特殊检查方法有：( ) A．心电图 B．X线检查 C．超声心动图 D．心脏导管 E．心血管造影
A.心电图B.X线检查C.超声心动图D.心脏导管
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实事求是思想路线的哲学基础是（）
A . A．马克思主义唯物论
B . B．马克思主义辩证法
C . C．马克思主义认识论
D . D．马克思主义政治学
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Behind the brewing war over protecting patients’ records in an age of HMOs and online medicine. Technology is a two-edged sword. Rarely is this as clear as it is in the realm of health care. Technology allows doctors to test their patients for generic defects--and then to turn around and spread the results throughout the world via the Internet. For someone in need of treatment, that’s good news. But for someone in search of a job or an insurance policy, the ridings can be all bad. Last week President Bill Clinton proposed a corollary to the patients’ bill of rights now before Congress: a right to medical privacy. Beginning In 2002, under rules set to become law in February, patients would be able to stipulate the conditions under which their personal medical data could be divulged. They would be able to examine their records and make corrections. They could learn who else had seen the information. Improper use of records by a caregiver or insurer could result in both civil and criminal penalties. The plan was, said Clinton, "an unprecedented step toward putting Americans back in control of their own medical records." While the administration billed the rules as an attempt to strike a balance between the needs of consumers and those of the health-care industry, neither doctors nor insurance companies were happy. The doctors said the rides could actually erode privacy, pointing to a prevision allowing managed-care plans to use personal in- formation without consent if the purpose was "health-care operations." That, physicians said, was a loophole through which HMOs and other insurers could pry into the doctor-patient relationship, in the name of assessing the quality of care. Meanwhile, the insurers protested that the rules would make them vulnerable to lawsuits. They were especially disturbed by a provision holding them liable for privacy breaches by "business partners" such as lawyers and accountants. Both groups agreed that privacy protections would drive up the cost of health care by at least an additional $ 3.8 billion, and maybe much more, over the next five years. They also complained about the increased level of federal scrutiny required by the new rules’ enforcement provisions. One aim of the rules is to reassure patients about confidentiality, thereby encouraging them to be open with their doctors. Today various cancers and sexually transmitted diseases can go untreated because patients are afraid of embarrassment or of losing insurance coverage. The fear is real: Clinton aides noted that a January poll by Princeton Survey Research Associates found that one in six U.S. adults had at some time done something unusual to conceal medical information, such as paying cash for services.
A．may ruin doctor-patient relationshipB．can do more harm than goodC．will prevent doctors from doing medical researchD．will cod up in more health care cost and poorer medical service
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