名词解释题碱基对(base pair)

名词解释题
碱基对(base pair)

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( 33 )有如下程序:#includeiostreamusing namespace std;class Pair{int m;int n;public:Pair ( int i , int j ) : m ( i ) , n ( j ) {}boot operator ( pair p ) const; // 须在类体外给出定义} ;int main () {Pair Al ( 3,4 ) , p2 ( 4,3 ) ; p3 ( 4,5 ) ;Cout ( plp2 ) ( P2P1 ) ( p2p3 ) ( p3p2 ) ;return 0;}运算符函数 。 operator 的功能是比较两个 Pair 对象的大小 , 当左边对象大时 , 返回 true , 否则返 回false 。 比较规则是首先比较两对象的 m 成员 , m 大者为大 ; 当 m 相等时比较 n , n 大者为大 。 程序输出 0101 ,下列对运算符重载函数的正确定义是A ) bool Pair::operator ( Pair p ) const{if ( m!=p.m ) return mp.m; return np.n;}B ) bool Pair:;operator ( Pair p ){if ( m!=p.m ) return mp.m; return np.n;}C ) bool Pair::operator ( Pair p ) const{if ( mp.m ) return true; return np.n;}D ) bool Pair:;operator ( Pair p ){if ( mp.m ) return true; return np.n;}

完整的核小体约有( )A、100碱基对B、200碱基对C、650碱基对D、1300碱基对E、1500碱基对

This pair of shoes isn‘t good, but that pair is ________ better.A、 ratherB、 lessC、everD、hardly

MotoPTP500的以太接口速率是(). A.10BASE.TB.100BASE.TC.10BASE.T/100BASE.TD.10BASE.T/1000BASE.T

有如下程序: include using namespace std; class Pair{ int m, n; public: Pair(int 有如下程序:#include<iostream>using namespace std;class Pair{int m, n;public:Pair(int j, int k):m(j), n(k){}int get(){return m;}int get()const{return m+n;)};int main() {Pair a(3, 5);const Pair b(3, 5);cout<<a. get()<<b. get();return 0;}运行时的输出结果是( )。A) 33B) 38C) 83D) 88A.B.C.D.

Ethernet 的物理层协议主要有(21)。A.10BASE-T1000BASE-T FDDIB.10BASE-T 100BASE-T 1000BASE-TC.100BASE-T 1000BASE-T FDDID.10BASE-T 100BASE-T FDDI

有如下程序: include using namespace std class Base{ int b; public: Base(int i) { 有如下程序:include<iostream>using namespace stdclass Base{int b;public:Base(int i) {b=i;}Void disp ( ) {cout<<"Base:b="<<b<<''; }};class Base1:virtual public Base{public:Base1(int i):Base(i){}};class Base2:virtual public Base{public:Base2(int i):Base(i){}};class Derived:public Basepublic Base1{int d;public:Derived(int i ,int j):Base1(j),Base2(j),【 】{ d=i; }void disp() {cout<<"Derived:d="<<d<<' ';}};int main()Derived objD(1,2);objD. disp()objD. Base::disp();objD. Base1::disp()objD. Base2::disp();return 0;}请将程序补充完整,使程序在运行时输出:Derivd:d=1 Base:b=2 Base:b=2 Base:b=2

Which of the following pin pairs remain with the same wire color for either T568A or T568B?() A. Pair 1 8B. Pair 2 7C. Pair 3 6D. Pair 4 5

Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?() A.100Base-T4B.100Base-TXC.100Base-XD.100Base-FX

WhichofthefollowingareformsofgigabitEthernetthatrequiretheuseoffiberopticcables?() A.1000Base-CXB.1000Base-TXC.1000Base-SXD.10Base-TE.1000Base-TF.1000Base-LX

Which of the following describes what the number two represents in l00Base2 cabling?() A. FiberB. Coaxial cableC. UTPD. Twisted pair

有如下程序:includeusing namespaee std;class Pair{int m;int n;public:Pair(int i, 有如下程序: #include<iostream> using namespaee std; class Pair{ int m; int n; public: Pair(int i,int j):m(i),n(j){ } boot operator>(pair P)const;//需在类体外给出定义 }; int main( ){ Pair pl(3,4),p2(4,3),p3(4,5); cout<<(pl>p2)<<(p2>p1)<<(p2>p3)<<(p3>p2); retum 0; } 运算符函数operator>的功能是比较两个Pair对象的大小,当左边对象大时,返回true,否则返回false。比较规则是首先比较两对象的m成员,m大者为大;当m相等时比较n,n大者为大。程序输出0101,下列对运算符重载函数的正确定义是A.bool Pair::operator>(Pair P)eonstB.bool Pair::operator>(Pair P) {if(m!=P.m)return m>p.In;return n>p.n;} {if(m!=P.m)return m>p.m;return n>p.n;}C.bool Pair::operator>(Pair P)eonstD.bool Pair::operator>(Pair P) {if(m>p.m)return true;return n>p.n;} {if(Ul>p.m)return true;return n>p.n;}

100BASE-TX makes use of two pairs of twisted pair cable, one pair used for transmission and the other for(69).A.receptionB.detectionC.relationD.connection

1OOBASE-TX makes use of two pairs of twisted pair cable,one pair used for(73) and the other for reception.A.detectionB.transmissionC.relationD.Connection

WhichtwoEthernetfiber-opticmodessupportdistancesofgreaterthan550meters?() A.1000BASE-CXB.100BASE-FXC.1000BASE-LXD.1000BASE-SXE.1000BASE-ZX

点突变是指()。A、一个碱基对替换一个碱基对B、插入一个碱基对C、缺少一个碱基对D、改变一个氨基酸残基E、以上都包括

10Base2和10Base5的区别是()A、10Base2用同轴;10Base5用双绞线B、10Base2用CSMA/CD;10Base5用优先级C、10Base2用总线;10Base5用环形D、10Base2细同轴;10Base5粗同轴

用非特异性的核酸酶处理染色质,预计会产生多长的DNA片段()A、随机长度的碱基对B、60个碱基对长度C、8个碱基对长度D、200个碱基对长度E、140个碱基对长度

Twisted Pair双绞线

何谓Hoogsteen碱基对,它与Watson-Crick碱基对有何不同?

假设Child类为Base类的子类,则下面()创建对象是错误的。A、Base base=new Child()B、Base base=new Base()C、Child child=new Child()D、Child child=new Base();

Which of the following pin pairs remain with the same wire color for either T568A or T568B?()A、Pair 1 8B、Pair 2 7C、Pair 3 6D、Pair 4 5

Which of the following describes what the number two represents in l00Base2 cabling?()A、FiberB、Coaxial cableC、UTPD、Twisted pair

单选题完整的核小体约有()A100碱基对B200碱基对C650碱基对D1300碱基对E1500碱基对

单选题Which of the following LAN technologies is considered fast Ethernet and uses two pairs of cabling,one pair for sending and the other pair for receiving?()A100Base-T4B100Base-TXC100Base-XD100Base-FX

单选题用非特异性的核酸酶处理染色质,预计会产生多长的DNA片段()A随机长度的碱基对B60个碱基对长度C8个碱基对长度D200个碱基对长度E140个碱基对长度

多选题Which of the following are forms of gigabit Ethernet that require the use of fiber optic cables?()A1000Base-CXB1000Base-TXC1000Base-SXD10Base-TE1000Base-TF1000Base-LX