题库题型:单项选择题 序号:001 题型:单项选择题 章节:2-2 题目:A、B两点的坐标为xA、yA及xB、yB测量学中两点间距离

影响土壤比重的因素: 土壤比重仅仅取决于土壤固相颗粒的物质组成。 Since a large portion of most soils is composed of particles derived from quartz minerals, the particle density of most soils is near 2.6 g/cc which is the density of quartz. Variations in the particle density are due to the presence of heavier minerals like iron oxides or lighter organic components

一、内能(状态量) 实验证明系统从A状态变化到B状态,可以采 用做功和传热的方法,不管经过什么过程,只要始 末状态确定,做功和传热之和保持不变

Disioint-set data structure (Union-Find) Problem: maintain a dynamic collection of pairwise-disjoint sets S=(S Each set S; has one element distinguished as the representative element, rep[sil lust support 3 operations

How large should a hash table be? Goal: Make the table as small as possible but large enough so that it wont overflow(or otherwise become inefficient Problem: what if we don 't know the proper size

ynamic order statistics OS-SELECT(i, S): returns the i th smallest element in the dynamic set S. OS-RANK(, S): returns the rank ofx E S in the sorted order of s s elements IDEA: Use a red-black tree for the set S, but keep subtree sizes in the nodes

附录GW48EDA系统使用说明 第一节GW48教学实验系统原理与使用介绍 GW48系统使用注意事项 a:闲置不用GW48EDA系统时,关闭电源,拔下电源插头! b:EDA软件安装方法可参见光盘中相应目录中的中文 README. TXT:详细使用方法可

第九章双口网络和多端元件 9.1双口网络及其端口条件 9.2双口网络的Z参数和Y参数 9.3双口网络的A参数和H参数 9.4双口网络的转移函数 9.5双口网络的特性阻抗 9.6双口网络的等效电路 9.7双口网络的连接 9.8运算放大器和回转器

Ch. 5 Hypothesis Testing The current framework of hypothesis testing is largely due to the work of Neyman and Pearson in the late 1920s, early 30s, complementing Fisher's work on estimation. As in estimation, we begin by postulating a statistical model but instead of seeking an estimator of 6 in e we consider the question whether

Ch. 23 Cointegration 1 Introduction An important property of (1) variables is that there can be linear combinations of theses variables that are I(O). If this is so then these variables are said to be cointegrated. Suppose that we consider two variables Yt and Xt that are I(1) (For example, Yt= Yt-1+ St and Xt= Xi-1+nt.)Then, Yt and Xt are said to be cointegrated if there exists a B such