A developer is designing a multi-tier web application and discovers a need to hide the details of establishingand maintaining remote communications from the client. In addition， because the business and resourcetiers are distributed， the application needs to minimize the inter-tier network traffic related to servicing clientrequests. Which design patterns， working together， address these issues？（） ["Front Controller and Transfer Object","Front Controller and Service Locator","Business Delegate and Transfer Object","Business Delegate and Intercepting Filter"]
起重机在电工进行设备修理时，（）要在场观察，检验修理后是否合格。 ["起重机司机","生产调度员","起重指挥"]
全面建成小康社会，实现（）比2010年翻一番。 ["国内生产总值","城乡居民人均收入","国内生产总值和城乡居民人均收入","社会生产总值"]
试简述QoS的各关键指标？
只有推动经济（），才能筑牢国家繁荣富强、人民幸福安康、社会和谐稳定的物质基础。 ["快速发展","持续健康发展","持续发展","健康发展"]
内分泌
