网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)

The minimum value of the function y=√(x2-2x+5)+√(x2+4) is ( ).

(A)4.

(B)3√2.

(C)2√5.

(D)√17.


参考答案

更多 “ The minimum value of the function y=√(x2-2x+5)+√(x2+4) is ( ).(A)4.(B)3√2.(C)2√5.(D)√17. ” 相关考题
考题 受压容器安全附件是:1.();2.();3.();4.();5.();6.();7.()

考题 黄药师的六个徒弟:1.()2.()3.()4.()5.武眠风6.冯默风

考题 publicclassreturnIt(2.returnTypemethodA(bytex,doubley)(3.return(short)x/y*2;4.)5.)WhatisthevalidreturnTypeformethodAinline2?() A.IntB.ByteC.LongD.ShortE.FloatF.Double

考题 单击一次窗体之后,下列程序代码的执行结果为______。 Private Sub Command1_ Click() Dim a As Integer, b As Integer, c As Integer a = 1: b = 2: c = 4 Print Value(a, b,C)End Sub Function Num(x As Integer, y As Integer, z As Integer) Num = x * x + y * y + z * z End Function Function Value(x As Integer, y As Integer, z As Integer) Value = Num(x, y, z) + 2 * x End FunctionA.21B.23C.19D.35

考题 以下程序的运行结果为:1. public class Conditional {2. public static void main(String args [] ) {3. int x = 4;4. System.out.println( "value is " +((x >4、? 99.99 : 9));5. }6. } A. 输出:value is 99.99B. 输出: value is 9C. 输出: value is 9.0D. 在第4行出现编译错误

考题 关于以下程序哪条叙述正确?1. int j = 2;2. switch ( j ) {3. case 2:4. System.out.println ("value is two");5. case 2 + 1:6. System.out.println ("value is three");7. break;8. default:9. System.out.println("value is " + j);10. break;11. }A. 第5行的表达式不合法;B. 变量j是可接受的,switch中表达式可以是byte, short, int,或long的任何类型;C. 输出为value is twoD. 输出是value is two 后跟value is threeE. 输出是value is two 后跟 value is 2

考题 曲线y=X2+4在(0,4)处的法线方程为( )。A.y=0 B.y=4 C.x=0 D.x=4

考题 除了各式屋顶外,中国传统物业的其他典型元素还有:1.()、2.()、3.()、4.()、5.()、6.()、7.()、8.()、9.()、10.()、11.()、12.()13.()、14.()、15.()、16.()、17.()、18.()、19.()、20.()、21.()。

考题 烟叶成熟的特征从哪几方面判断:1.()、2.()、3.()、4.()、5.()、6.()

考题 1. public class SimpleCalc {  2. public int value;  3. public void calculate() { value += 7; }  4. } And:  1. public class MultiCalc extends SimpleCalc {  2. public void calculate() { value -= 3; }  3. public void calculate(int multiplier) {  4. calculate();  5. super.calculate();  6. value *=multiplier;  7. }  8. public static void main(String[] args) {  9. MultiCalc calculator = new MultiCalc();  10. calculator.calculate(2);  11. System.out.println(”Value is: “+ calculator.value);  12. }  13. }  What is the result?() A、 Value is: 8B、 Compilation fails.C、 Value is: 12D、 Value is: -12E、 The code runs with no output.F、 An exception is thrown at runtime.

考题 1. public class X implements Runnable(  2. private int x;  3. private int y;  4.    5. public static void main(String[]args)  6. X that = new X();  7. (new Thread(that)).start();  8. (new Thread(that)).start();  9. )  10.    11. public void run()  (  12. for (;;)  (  13. x++; 14. y++;  15. System.out.printIn(“x=” + x + “, y = ” + y);  16.     ) 17. ) What is the result?()A、 Errors at lines 7 and 8 cause compilation to fail.B、 The program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”).C、 The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”).D、 The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1, y=1” followed by “x=2, y=2”).

考题 1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()  A、 -1B、 255C、 127D、 Compilation will fail.E、 Compilation will succeed but the program will throw an exception at line 4.

考题 1. public class SwitchTest {  2. public static void main (String []args)  {  3. System.out.PrintIn(“value =” +switchIt(4));  4. }  5. public static int switchIt(int x)  {  6. int j = 1;  7. switch (x) {  8. case 1: j++;  9. case 2: j++;  10. case 3: j++;  11. case 4: j++;  12. case 5: j++;  13. default:j++;  14. }  15. return j + x;  16. }  17. }     What is the output from line 3?()  A、 Value = 3B、 Value = 4C、 Value = 5D、 Value = 6E、 Value = 7F、 Value = 8

考题 常见的网上购物流程是()。A、1.查找商品2.提交订单3.放入购物车4.查看订单状态5.收货确认B、1.查找商品2.提交订单3.查看订单状态4.放入购物车5.收货确认C、1.查找商品2.放入购物车3.提交订单4.查看订单状态5.收货确认D、1.查找商品2.放入购物车3.提交订单4.收货确认5.查看订单状态

考题 分析下列汉字音节结构。 1.摆 2.皇 3.卫 4.惘 5.情

考题 观赏植物根据观赏部位分类可分为1.()2.()3.()4.()5.().

考题 露地观赏植物可分1.()2.()3.()4.()5.().

考题 1. public class returnIt (  2. returnType methodA(byte x, double y) (  3. return (short) x/y * 2;  4. )  5. )   What is the valid returnType for methodA in line 2?()  A、 IntB、 ByteC、 LongD、 ShortE、 FloatF、 Double

考题 1. public class ReturnIt {  2. return Type methodA(byte x, double y) {  3. return (short)x / y * 2;  4. }  5. }  What is the narrowest valid returnType for methodA in line2?()  A、 intB、 byteC、 longD、 shortE、 floatF、 double

考题 单选题1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()A  -1B  255C  127D  Compilation will fail.E  Compilation will succeed but the program will throw an exception at line 4.

考题 填空题除了各式屋顶外,中国传统物业的其他典型元素还有:1.()、2.()、3.()、4.()、5.()、6.()、7.()、8.()、9.()、10.()、11.()、12.()13.()、14.()、15.()、16.()、17.()、18.()、19.()、20.()、21.()。

考题 单选题1. public class X implements Runnable(  2. private int x;  3. private int y;  4.    5. public static void main(String[]args)  6. X that = new X();  7. (new Thread(that)).start();  8. (new Thread(that)).start();  9. )  10.    11. public void run()  (  12. for (;;)  (  13. x++; 14. y++;  15. System.out.printIn(“x=” + x + “, y = ” + y);  16.     ) 17. ) What is the result?()A  Errors at lines 7 and 8 cause compilation to fail.B  The program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”).C  The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”).D  The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1, y=1” followed by “x=2, y=2”).

考题 单选题1. public class ReturnIt {  2. return Type methodA(byte x, double y) {  3. return (short)x / y * 2;  4. }  5. }  What is the narrowest valid returnType for methodA in line2?()A  intB  byteC  longD  shortE  floatF  double

考题 填空题物候观测应做到:1.定点;2.();3.定时、定年限;4.();5.资料整理。

考题 填空题露地观赏植物可分1.()2.()3.()4.()5.().

考题 单选题常见的网上购物流程是()。A 1.查找商品2.提交订单3.放入购物车4.查看订单状态5.收货确认B 1.查找商品2.提交订单3.查看订单状态4.放入购物车5.收货确认C 1.查找商品2.放入购物车3.提交订单4.查看订单状态5.收货确认D 1.查找商品2.放入购物车3.提交订单4.收货确认5.查看订单状态

考题 填空题k is an integer between 50 and 90 and is a multiple of 4. When k is divided by 5, the remainder is 3. When k is divided by 3, the remainder is 2. What is the value of k?____