运用多元判别分析可以构建Z计分模型,这种多变量技术通过分析一组变量,以达到()的效果。
A. 在组内差异最大化的同时实现组间差异最大化
B. 在组内差异最小化的同时实现组间差异最小化
C. 在组内差异最小化的同时实现组间差异最大化
D. 在组内差异最大化的同时实现组间差异最小化
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请根据短文内容判断给出的语句是否正确,正确的写“T”,错误的写“F”。
An annual report of a company provides information about its business performance for certain people. These people include the investors, potential investors and other stakeholders. From the report, people can understand the company's business scope, recent situation and future development. The main parts of an annual report usually include chairman's letter, operation analysis and financial statements.
·Chairman's Letter
Usually, an annual report should contain a letter from the chairman. The letter should provide details about the successes and the challenges of the past year. It should also include the future outlook for the company.
·Operation Analysis
The operation analysis is an overview of the business in the past year. It usually includes new hires and new product introductions. At the same time, it will introduce business acquisitions and other important issues.
·Financial Statements
The financial statements are very important for an annual report. People can know the company's performance in the past from the statements. It usually three aspects. The first one is the profit and loss statement. The second one is the balance sheet. And the third one is the cash flow statement.
() 26. An annual report of a company provides some information about its business performance for certain people.
() 27. People can know everything of the company from the annual report.
() 28. An annual report usually includes chairman's letter, financial statements and operation analysis.
() 29. A chairman's letter should include the strategic direction moving forward.
() 30. This passage is mainly about the main parts of an annual report.
中国科学院国家天文台10月10日召开新闻发布会宣布,被誉为“中国天眼”的_____米口径球面射电望远镜(FAST)经过一年紧张调试,已实现指向、跟踪、漂移扫描等多种观测模式的顺利运行,并确认了多颗新发现的脉冲星。这是我国天文望远镜首次发现脉冲星。
A. 600
B. 500
C. 400
D. 300
经济费用效益分析使用的是()价格体系。
A. 影子
B. 市场
C. 财务
D. 计划
2015年6月21日早晨,某市某小区2号楼3单元503室女子里卖弄除外遛狗,行至该单元三层时,狗叫惊吓到正在上楼的女子刘某(402住户),李某和刘某互骂互殴,造成刘某轻微伤,公安民警接报警后赶到现场,了解到以下情况:刘某称三楼住户张某看见双方互殴,单张某不予证实;二楼住户徐某听见双方互骂,并上楼劝架,但未看见双方动手;李某也不承认案发当日与刘某见过面。 下列关于民警后续调查工作错误的说法是:
A. 可以查询犬类登记,确认李某是否依法养犬
B. 应当走访临近的二层、四层的居民,了解案发时的情况
C. 可以要求居委会调取当日周边私人视频资料
D. 可以走房居委会,了解双方日常关系