◆ Background ◆ Preliminary Concepts ◆ Sampling and the Fourier Transform of Sampled Functions ◆ The Discrete Fourier Transform of One Variable ◆ Extension to Functions of Two Variables ◆ Some Properties of the 2-D Discrete Fourier Transform ◆ The Basics of Filtering in the Frequency Domain ◆ Image Smoothing Using Frequency Domain Filters ◆ Image Sharpening Using Frequency Domain Filters ◆ Selective Filtering

一、任何抗菌药物，除口服或局部应用不吸收者外，在体内均有ADME过程，即抗菌药物的体内过程。 1、 A：absorption 2、D：distribution 3、 M：metabolism 4、 E：excretion

1、令n是待排序的元素数,p=2是d维超立方中处理器的数目。假定开始随机选定主元 x,并将其播送给所有其他处理器,每个处理器按索接收到的x,对其np个元素按照≤x 和>x进行划分,然后按维进行交换。这样在超立方上实现的快排序算法如下:

Physics 121, Sections 9, 10, 11, and 12 Lecture 7 Today's Topics Homework 3: Due Friday Sept 23@ 6: 00PM Ch.3:#64.75,and81 ←Ch4:#4,8,21,25,36,and40 e Chapter 4: Motion in 2-D Projectile motion Relative velocity ← More examples of FBDs

4.3 非线性电路的应用举例 4.3.1 C类谐振功率放大器 4.3.2 D类和E类功率放大器 4.3.3 倍频器 4.3.4 跨导线性回路与模拟相乘器

一、单项选择题(每小题1分,共10分) 1.d2.b3.a4.b5.a6.b7.a8.d9.d10C 二、多项选择题(多选、少选、错选均不得分,每小题1.5分,共15分) 1.AD 2. ACD 3.ACD 4.ABD 5.BC.CD 7.BDAC 8.ABC 9.AD 10.ABCD 三、名词解释(每个3分,共24分) 1生态系统:指在一定的时间和空间范围内,生物与生物之间、生物与非生物环境之间密切联系、相互作用并具有一定结构及完成一定功能的综合体,或者说是由生物群落与非生物环境相互依存所组成的一个生态学功能单位。 2互利共生:指两个物种长期共同生活在

一、单项选择题(每小题1分,共10分) 1.d2.c3.a4.b.a6.b7.a8.d9.d10.c 二、多项选择题(多选、少选、错选均不得分,每小题1.5分,共15分) 1.AD 2AC 3ACD 4ABC 5BC 6ABCD 7BDAC 8ABD 9AD 10AC 三、名词解释(每个3分,共24分) 1.生态系统:指在一定的时间和空间范围内生物与生物之间、生物与非生物环境之间密切联系、相互作用并具有一定结构及完成一定功能的综合体,或者说是由生物群落与非生物环境相互依存所组成的一个生态学功能单位

20.1单项选择题 (1)D(2)C 20.2多项选择题 (1) ACD (2)AC 20.3简答题 (1)专利制度的理论基础是什么?(参见第1节) (2)简答我国专利制度的发展过程。(参见第2节)

In this lecture, we consider the problem of a body in which the mass of the body changes during the motion, that is, m is a function of t, i.e. m(t). Although there are many cases for which this particular model is applicable, one of obvious importance to us are rockets. We shall see that a significant fraction of the mass of a rocket is the fuel, which is expelled during flight at a high velocity and thus, provides the propulsive force for the rocket

We will start by studying the motion of a particle. We think of particle as a body which has mass, but has negligible dimensions. Treating bodies as particles is, of course, an idealization which involves an approximation. This approximation may be perfectly acceptable in some situations and not adequate in some other cases. For instance, if we want to study the motion of planets it is common to consider each planet as a particle