一、填空题(每空1分,共20分) 1称为空串;称为空白串。 2.设S=“A;document/mary.doc”,则 trlen(s)= ,“的字符定位的位置为

Uinta I. Basic listening practice 1. Script M: Did you pick up the paper for me today? i really want to check the job vacancies W: I know, it's over there. There's not much happen though. I had a look already Maybe you should look on the Net instead

一．仪器启动 按下面板上的电源按钮，电源接通。先闪烁显示 “WELCOME” 2 s，再闪烁显示仪器型号“F10DDS” 1 s。之后根据系统功能中开机状态设置，进入“点频” 功能状态，波形显示区显示当前波形“～”。频率为 10.000 000 00kHz；或者进入上次关机前的状态

3-1惯性系S′相对惯性系S以速度u运动.当它们的坐标原点O与O重合时,t=t=0,发 出一光波,此后两惯性系的观测者观测该光波的波阵面形状如何?用直角坐标系写出各自观 测的波阵面的方程

Inti I. Basic listening practice 1. Script W: Ok. It's your turn to pay the bill. I paid last time M: What? You have a selective memory. You tried to pay last turn, but your credit card failed; so I ended up paying! It's definitely your turn Q: What is true according to the conversation? 2. Script

1 . A reaction has the stoichiometric equationA+B=2R. What is the order of reaction? 2. A reaction with stoichiometric equationhas the following rate expressionWhat is the rate expression for this reaction if thestoichiometric equation is written as A+2B=2R+S?A B R S2

1.设计要求 控制8个LED进行花式显示，设计4中显示模式： S0:从左到右逐个点亮LED; S1:从右到左逐个点亮LED;

第二十一章过渡金属() 一、介绍第Ⅷ族元素,9个元素,有分布应用最广的Fe(~5%),也有含量极少的贵重稀有金属。如:Ru,Rh(10-8%),Pd,0s,r(10-7%),Pt(10-6%)。比重最大的金属单质0s,密度22.57g/cm3 二、分为铁系元素和铂系元素。前者为第一过渡系的Fe,Co,ni,后者为稀有重金属 Ru, Rh, Pd, Os, Ir, Pt

Chapter 27 Electromagnetic Induction and Faraday's Law 1. The Law of Electromagnetic Induction (电磁感应定律) 2. Motional Induced EMF (动生和感生电动势)

14-1伽利略变换式牛顿的绝对时空观 一、伽利略变换式 经典力学的相对性原理S系相对于S系以匀速沿轴运动,观察两参照系中同一事件的时空关系