Which two statements are true about Oracle Real Applications Insight ？（）
A. it provides enhanced visibility across the entire application infrastructure
B. it provides a set of management tools that enable automation of configuraion
C. it significantly increases the performance of Web-based applications with no code change
D. it dramatically reduces costs associated with diagnostics， configuration， and deployment on production servers&e
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Which of the following statements is TRUE regarding automatic identification systems (AIS) ?（）
A. The master may，at his/her discretion，turn off the AIS if he/she believes that it may compromise the safety or security of the vessel
B. Under no circumstances shall AIS be turned off while underway as this could endanger the vessel and those around her
C. AIS is always required to be operating if the vessel is in or in the vicinity of a VTS area
D. AIS is always required to be operating if the vessel is within 100 nautical miles of the coastline
无需在服务器端配置专门的运行环境，即可在客户端浏览器中运行的是（）。
A. 表单中的“提交”功能
B. JavaScript程序代码
C. ASP程序
D. 发帖子
型砂在使用后保留原有性能而能多次反复使用的性能称为复用性，亦称（）。
D5ZJ励磁吸起，与此同时某值班员办理SⅡD－D5调车进路，但进路不能选出，为什么？
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