1核电专业英语试题库Lesson 1 The basic Concepts for Nuclear Physics1. A nucleon is composed of protons and neutrons, and constitutes practically all the mass of the atom. （ ）key:type: judgment question2. In the nuclear reactions mass and energy is interchanged. ( )key:type: judgment question3.Capturing gamma radiation is a result of fission. ( )key:type: judgment question4.The binding force acts only when the nucleons are ( )A. large B. close to each other C. similar D. excitedkey: Btype: single-choice question5.Atoms having the same atomic number Z,but different numbers of neutrons N are called ( ) of the element.A. nuclei B. isotopes C. units D. masseskey: Btype: single-choice question6. The excited nuclei become de-excited by emission of ( )A. -rays or particles B.X-rays C. energy D. deuteronskey: Atype: single-choice question7.The protons and neutrons are called ( )A. nuclei B. isotopes C. nucleons D. atomskey: Ctype: single-choice question8.Fission in uranium-238 can be caused by neutrons of ( )A. is easy B. can be caused by neutrons of 0.1Mev C. can be caused by neutrons of 1.5Mev D. never realizekey: Ctype: single-choice question9.( ) are emitted during fission and the possibility of a chain reaction is realized.A. Elements B. Fragments C. -rays D. Neutronskey: Dtype: single-choice question10.Which are the fissile nuclei among the following isotopes? ( )A. 233U B. 235U C. 239Pu D. 238Ukey: A,B,C type: multiple-choice questionLesson 2 Radiation11. The -rays has many charges. （ ）key:type: judgment question12.Low energy neutrons usually interact with nucleus more difficult than high energy neutrons. ( )key:type: judgment question13.In the photoelectric effect, the photon is ( ).A. produced B. found C. eliminated D. increasedkey: Ctype: single-choice question14.Beta particles presents ( ) shielding problem.A. no B. no serious C. a D. seriouskey: Btype: single-choice question15.When radioactive isotopes decay the ( ) are formed.A. protons B. daughter products C. radioactive isotopes D. neutron and electronkey: Btype: single-choice question16.Alpha particles can ( ) the outer layer of skin of the body.A. penetrate B. pass C. be accelerated D. be stopped bykey: Dtype: single-choice question17.Beta particles are capable of producing ( ) as they penetrate a substance.A. large amounts of ionization B. energy C. photons D. particleskey: Atype: single-choice question18.Alpha particles are ( ) in their motion than electrons.A. faster B. slower C. heavier D. less readily deflectedkey: Dtype: single-choice question19. The interaction between gamma rays with matter includes ( ).A. photon-electron scattering B. Slowing by atoms C. photoelectric effect D. electron-positron production key: A,C,D type: multiple-choice questionLesson 3 Nuclear Reactions220. We let the macroscopic cross section be labeled .（ ）key: type: judgment question21.The energy released in nuclear reaction is about a million times as great as for the chemical reaction. ( )key: type: judgment question22.There are several similarities between nuclear and chemical reactions, such as( )A. the same energy released B. conservation of charge C. conservation of particles number involved D. conservation of mass-energykey: B,C,Dtype: multiple-choice questionLesson 4 Nuclear Materials23.Hydrogen and deuterium, being gases, are suitable moderators. （ ）key:type: judgment question24.Boron is the most common materials for controlling reactors. ( )key:type: judgment question25.Beryllium as fuel cladding ( ) in power reactor.A. is used B. use C. has been used D. hasnt been usedkey: Dtype: single-choice question26.Liquid metals are potentially excellent reactor ( )A. moderator B. structure material C. coolant D. materialkey: Ctype: single-choice question27.Uranium dioxide can ( ) high burnups.A. not to be used B. be used to C. use to D. be used with key: Btype: single-choice question28.During common reactor operation zirconium ( )steam.A. reacted with B. cannot react with C. can react with D. cannot be reactedkey: Btype: single-choice question29.Uranium in ( ) form can be used as fuel material for water cooled reactors.A. pure uranium B. uranium dioxide C. uranium hexafluoride D. uranium carbidekey: A,B,Dtype: multiple-choice question30.The choice of moderator for thermal reactors is mainly limited to the following materials :( )A. water B. beryllium C. heavy water D. graphitekey: A,C,Dtype: multiple-choice question31.对热堆而言，水作为慢化剂显然是一种最显而易见的，同时水还能作为冷却剂。它有优秀的慢化性能，因此用水作慢化剂的热堆，比其它的热堆有更紧凑的堆芯结构。key: Water is an obvious choice for the moderator of thermal reactor, and it can also serve as the coolant. It has excellent neutron slowing down properties which enable water moderated reactors to have much more compac