Exercises 1. What is the wavelength of a neutron traveling at a speed of 3. 90 km s- Neutrons btained from a nuclear pile

材料工程基础试卷A答案 一、选择题(共15题,每题2分,共30分) 1.a2.c3.a4.a5.C 6.b7.c8.c9.a10 11.c12.a13.b14.a15.A

Section A Charlie Chaplin Section B The politicalo Career of a Female Politician Section C A family of Firste

Welcome to the exiting world of NMR... though a little hard to learn... remember... .Why just NMR... .How a ID NMR spectrum look like... .What we can obtain from it... and what can we do for a big molecule

What is nmr? g NMR, Nuclear Magnetic Resonance, is a phenomenon which occurs when the nuclei of certain atoms are immersed in a static magnetic field and exposed to a second oscillating magnetic field

Karnaugh maps It is a matrix of squares. each square represent a minterm or maxterm from a Boolean equaTion N-variable karnaugh map have 2 squares The binary numeral on the sides of k-map is the variable coordinates

1-A1 α,α´-Dibrom-ο-xylol aus ο-Xylol 1-A2 3-Bromcyclohexen aus Cyclohexen 1-A3 1-Chloradamantan aus Adamantan

1.(04-1-04)设矩阵A=120,矩阵B足ABA=2BA+E,其中A为 001 A的伴随矩阵,E是单位矩阵,则B=

1. Unit 1 Language in mission Text A An impressive English lesson 2. Unit 2 College — The ladder to success? Text A The humanities: Out of date? 3. Unit 3 Discovery of a new life stage? Text A Journey through the odyssey years 4. Unit 4 Dance with love Text A College sweethearts 5. Unit 5 The money game Text A Spend or save–The student’s dilemma 6. Unit 6 Less is more Text A Door closer, are you? 7. Unit 7 Women: Making a difference Text A Women at the management level

I．Choose the Correct Answer 1. A disturbance can be written x b xt b t a y(x,t) (e e e ) 2 2 −( / ) 2 / − = . This disturbance is （ D ） (A) Not a traveling wave. (B) A traveling wave with speed v = a. (C) A traveling wave with speed v = a/b. (D) A traveling wave with speed v = b