Which is the true choice about the web container request processing model（）？ [" The init method on a filter is called the first time a servlet mapped to that filter is invoked"," A filter defined for a servlet must always forward control to the next resource in the filter chain."," Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file"," If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it"]
简述外汇管制的目的。
G20X＿Y＿Z＿×＿中×为：（）。 ["进给速度","主轴转速","切削速度","螺距"]
职场人际交往的原则有哪些？
大观园诗社中，作诗人有雅号，其中“焦下客”这个雅号是（） ["史湘云","薛宝钗","贾探春","王熙凤"]
发生哪些情况应停用高频保护？
