近代中国城市发展由哪些特点？
劳动力指人的劳动能力，是人在从事劳动时所能运用的体力和智力的总和。劳动力资源包括劳动力的（）和（）两方面。
Which of the following supports the XML data type?（） ["A unique index","A composite index","A check constraint","A generated colum"]
A customer has requested an IBM System Storage DS8700 solution to meet the following requirements： - 20% yearly growth - 29，000 IOPS - approximately 50/50 mix of read/write operations - small （4 KB） data transfers The storage specialist has created a Disk Magic model in which each port is capable of approximately 2，900 to 3，100 IOPS. What is the minimum number of ports that should be configured on the DS8700 to handle the projected workload for the first year（） ["8","10","12","16"]
Derek has created a view in the products.nsf database. Derek wants the markup column in the view to display the selling price of the cost. He wants this value to display in currency. Which one of the following should derekl do? （） [" use the @currenty in thr column formula in the view "," Select currency on the numbers tab in the view properties box "," Select currency on the numbers tab in the column properties box "," Select currency on the numbers tab in the field properties box&e"]
结合实例，试述餐饮企业实施关系营销的策略。
