某事故树的结构函数为T={ Xl + Xl X2+ Xl X3},则导致该事故的最基本原因是 ( )。A.{Xl},{ XlX2},{ Xl X3} B.{Xl}C.{ Xl},{ Xl X3} D.{X2},{X3}
某事故树的结构函数为T={ Xl + Xl X2+ Xl X3},则导致该事故的最基本原因是 ( )。
A.{Xl},{ XlX2},{ Xl X3} B.{Xl}
C.{ Xl},{ Xl X3} D.{X2},{X3}
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正常男性红细胞计数为A、(3.5~5.5)xl012/LB、(4.0~5.5)xl012/LC、(3.5~5.0)xl012/LD、(6.0~7.0)xl012/LE、(3.9~5.3)xl012/L
某事故树的最小径集为:Pl={Xl,X2,X4},P2={Xl,X2,X5},P3={Xl,X3,X6},P4={Xl,X3,X7},则结构重要程度为()。 A、I(1)I(2)=I(3)I(4)=I(5)B、I(1)I(2)I(4)=I(5)C、I(1)I(2)I(3)D、I(3)I(2)I(4)=I(5)
某事故树的最小径集为:P1={Xl,X3},P2={Xl,X4},P3={X2,X3,X5},P4={X2,X4,X6},则基本事件X1,X2,X3的结构重要程度按大小排序正确的是()。 A、I(1)I(3)I(2)B、I(1)=I(2)=I(3)C、I(1)D、I(2)I(1)I(3)
有如下程序: * * *主程序:P.prg* * * * * *子程序:P1.prg* * * SET TALK OFF X2=X2+1 STORE 2 TO X1,X2,X3 DO P2 X1=Xl+1 X1:Xl+1 DO PI RETURN ?xl+x2+x3 * * *子程序:P2.prg* * * RETURN x3=x3+1 SET TALK ON RETURN TO MASTER 执行命令DOP后,屏幕显示的结果为A.3B.4C.9D.10
现有:publicclassTester{publicstaticvoidmain(String[]args){intx-5;Integerxl=x;Integerx2=x;intx3=newInteger(5);system..ut.print(x1.equals(x));system..ut.print(xl==x);system..ut.print(x2.equals(xl));system..ut.print(x2==xl);system..ut.print(x2==x3);system..ut.print(x2.equals(x3));}}结果为:()A.编译失败B.falsefalsetruetruetruetrueC.truetruetruetruetruetrueD.falsefalsetruetruetruefalseE.truefalsetruefalsefalsetrueF.运行时异常被抛出
一个关系模式为Y(X1,X2,X3,X4),假定该关系存在如下函数依赖:(Xl,X2)→ X3,X2→X4,则该关系的码为( )。A.X1B.X2C.(Xl,X2)D.(Xl,X2,X3,X4)
某事故树的结构函数为T={ Xl + Xl X2+ Xl X3},则导致该事故的最基本原因是 ( )。A.{Xl},{ XlX2},{ Xl X3}B.{Xl}C.{ Xl},{ Xl X3}D.{X2},{X3}
某事故树的最小径集为:Pl={Xl,X2,X4},P2={Xl,X2,X5},P3={Xl,X3,X6},P4={Xl,X3,X7},则结构重要程度为()。A、I(1)>I(2)=I(3)>I(4)=I(5)B、I(1)>I(2)<I(3)>I(4)=I(5)C、I(1)>I(2)>I(3)<I(4)=I(5)D、I(3)>I(2)<I(1)>I(4)=I(5)
现有: public class Tester { public static void main (String[] args) { intx-5; Integer xl=x; Integer x2=x; int x3=new Integer(5); system..ut.print(x1.equals(x)); system..ut.print(xl==x); system..ut.print(x2.equals(xl)); system..ut.print(x2==xl); system..ut.print(x2==x3); system..ut.print(x2.equals(x3)); } } 结果为:() A、编译失败B、falsefalsetruetruetruetrueC、truetruetruetruetruetrueD、falsefalsetruetruetruefalseE、truefalsetruefalsefalsetrueF、运行时异常被抛出
单选题现有: public class Tester { public static void main (String[] args) { intx-5; Integer xl=x; Integer x2=x; int x3=new Integer(5); system..ut.print(x1.equals(x)); system..ut.print(xl==x); system..ut.print(x2.equals(xl)); system..ut.print(x2==xl); system..ut.print(x2==x3); system..ut.print(x2.equals(x3)); } } 结果为:()A编译失败BfalsefalsetruetruetruetrueCtruetruetruetruetruetrueDfalsefalsetruetruetruefalseEtruefalsetruefalsefalsetrueF运行时异常被抛出