What kind of filter is used to extract a single-freq. harmonic from the harmonic components contained in square wave? A: Low-pass Filter B: High-pass Filter C: Band-pass Filter D: Band-elimination Filter

filter-policy import 是对LSA过滤,而不是路由(判断题) A: 正确 B: 错误

We can employ the next filters to detect edges from an image: A: Roberts filter B: Sobel filter C: mean filter D: Gaussian filter

Which of the following policy was adopted by Britain in Europe after WWII? A: isolationist policy B: cooperation policy C: appeasement policy D: alliance policy

The filter [img=142x47]18031c9cd67f894.png[/img] is a lowpass filter

According to the assignment rule, which of the following policy mixes<br/>is appropriate for a country with high inflation, a balance of<br/>payments deficit, and fixed exchange rates? ____. A: Expansionary fiscal policy and expansionary monetary policy B: Expansionary fiscal policy and contractionary monetary policy C: Contractionary fiscal policy and expansionary monetary policy D: Contractionary fiscal policy and contractionary monetary policy

下列关于Filter的描述中，正确的是 （）。 A: Filter只能过滤页面 B: Filter只能过滤Servlet C: Filter程序必须实现Filter接口 D: 一个web应用只能注册一个Filte

filter ____

在一个Filter中，处理filter业务的是（）方法

编写一个Filter，需要（ ）。 A: 实现Filter接口 B: 继承HttpFilter类 C: 实现HttpFilter接口 D: 继承Filter类