You are analyzing the performance of a SQL Azure database.   You need to recommend an approach for identifying the indexes that should be added to improve database performance.  What should you recommend？（）

[问答题]听到一个熟人在说话，就能判断出是谁在说话，这个过程是语言符号在传递信息吗？为什么？

[单选题]In every cultivated language, there are two great classes of words which, taken together, comprise the whole vocabulary. First, there are those words（1）which we become acquainted in daily conversation, which we（2）,that is to say, from the（3） of our own family and from our familiar associates, and（4） we should know and use （5 ）we could not read or write. They （6） the common things of life, and are the stock in trade of all who （7） the language. Such words may be called“popular”, since they belong to the people （8） and are not the exclusive （9） of a limited class. On the other hand, our language （10） a multitude of words which are comparatively （11） used in ordinary conversation. Their meanings are known to every educated person, but there is little （12） to use them at home or in the market-place. Our （13） acquaintance with them comes not from our mother's （14） or from the talk of our school-mates, （15） from books that we read, lectures that we （16） ,or the more （17）conversation of highly educated speakers who are discussing some particular （18） n a style appropriately elevated above the habitual（19） f everyday life. Such words are called“learned”, and the （20） between them and the“popular”words is of great importance to a right understanding of linguistic process. 请在7处填上正确答案（）

[问答题]局域网交换方式的种类及其特点？

[填空题]铁路安全质量管理红线工作原则（一）（）。（二）（）。（三）（）。

[单选题]可抗心律失常的局麻药是（　）

[多选题]在编制财务报告时，除了编制资产负债表.利润表.现金流量表等相关报表外，还包括报表附注，其中该附注应该包含的内容有（）。

[单选题]HXD3D型电力机车每组辅助变流器，均可向控制电源装置提供（）电源。

[判断题]驾驶室的前方设置了前照灯和标志灯，在驾驶员的脚底设置了汽笛用的笛阀。

[单选题]我国全国能源效率利用为33%，比发达国家低（）个百分点。

[单选题]有些课题主要包含高度有结构的知识和技能（如数学、物理、化学、计算、语法等），如果教学目标是要求学生尽快地掌握这种知识和技能，则宜于采用（　　）。

[单选题]You are analyzing the performance of a SQL Azure database.   You need to recomme...

[单选题]When analyzing disk I/O performance， which of the following metrics and/or stati...

[多选题]Which three statements about performance analysis by SQL Performance Analyzer ar...

[多选题]Which three statements about performance analysis by SQL Performance Analyzer ar...

[多选题]Which three statements about performance analysis by SQL Performance Analyzer ar...

[多选题]You plan to use SQL Performance Analyzer to analyze the SQL workload. You create...

[多选题]Identify three scenarios in which you would recommend the use of SQL Performance...

[单选题]Which of the following is a potential performance tuning recommendation from the...

[单选题]Which of the following is a potential performance tuning recommendation from the...

[多选题]You plan to use SQL Performance Analyzer to analyze the SQL workload. You create...