DTR100参数“AF Line OUT Pri”设定为-10.0dBm,表示()。A、音频负载可得到-10.0dBm电平B、音频负载为平衡600欧时可得到-10.0dBm电平C、音频负载为不平衡600欧时可得到-10.0dBm电平D、音频负载可得到的电平≥-10.0dBm
DTR100参数“AF Line OUT Pri”设定为-10.0dBm,表示()。
- A、音频负载可得到-10.0dBm电平
- B、音频负载为平衡600欧时可得到-10.0dBm电平
- C、音频负载为不平衡600欧时可得到-10.0dBm电平
- D、音频负载可得到的电平≥-10.0dBm
相关考题:
ClassTestException1.publicclassTestExceptionextendsException{2.}Classa:1.publicclassa{2.3.publicStringsayHello(Stringname)throwsTestException{4.5.if(name==null){6.thrownewTestException();7.}8.9.returnHello+name;10.}11.12.}Aprogrammerwantstousethiscodeinanapplication:45.Aa=newA();46.System.out.println(a.sayHello(”John”));Whichtwoaretrue?()A.Classawillnotcompile.B.Line46canthrowtheuncheckedexceptionTestException.C.Line45canthrowtheuncheckedexceptionTestException.D.Line46willcompileiftheenclosingmethodthrowsaTestException.E.Line46willcompileifenclosedinatryblock,whereTestExceptioniscaught.
Giventhefollowingcodefragment:1)Stringstr=null;2)if((str!=null)(str.length()10)){3)System.out.println(morethan10);4)}5)elseif((str!=null)(str.length()5)){6)System.out.println(lessthan5);7)}8)else{System.out.println(end);}Whichlinewillcauseerror?()A.line1B.line2C.line5D.line8
Click the Exhibit button.Given:What is the result?() A.Line 26 prints a to System.out.B.Line 26 prints b to System.out.C.An exception is thrown at line 26 at runtime.D.Compilation of class A will fail due to an error in line 6.
当你编译运行下列程序代码,会得到什么结果?private class Base{ Base(){ int i = 100; System.out.println(i); } }public class Pri extends Base{ staticint i = 200;public static void main(String argv[]){ Pri p = new Pri(); System.out.println(i); } }A.这段代码不能通过编译B.输出200C.输出100和200D.输出100
以下程序调试结果为:class Base{Base(){int i = 100;System.out.print (i);}}public class Pri extends Base{static int i = 200;public static void main(String argv[]){Pri p = new Pri();System.out.print(i);}} A.编译错误B.200C.100200D.100
发射状态时,遥控台DTR100选择主AF线还是备AF线是()。A、通过检测AF线上是否存在SQL指令来确定的B、通过检测AF线上是否存在PTT指令来确定的C、通过检测AF线上是否存在音频信号来确定的D、通过检测AF线上是否存在CMTONE来确定的
Given the following code fragment: 1) String str = null; 2) if ((str != null) (str.length() 10)) { 3) System.out.println("more than 10"); 4) } 5) else if ((str != null) (str.length() 5)) { 6) System.out.println("less than 5"); 7) } 8) else { System.out.println("end"); } Which line will cause error?() A、 line 1B、 line 2C、 line 5D、 line 8
1. public class A { 2. 3. private int counter = 0; 4. 5. public static int getInstanceCount() { 6. return counter; 7. } 8. 9. public A() { 10. counter++; 11. } 12. 13. } Given this code from Class B: 25.A a1 =new A(); 26. A a2 =new A(); 27. A a3 =new A(); 28. System.out.printIn(A.getInstanceCount() ); What is the result?() A、 Compilation of class A fails.B、 Line 28 prints the value 3 to System.out.C、 Line 28 prints the value 1 to System.out.D、 A runtime error occurs when line 25 executes.E、 Compilation fails because of an error on line 28.
1. class Bar { } 1. class Test { 2. Bar doBar() { 3. Bar b = new Bar(); 4. return b; 5. } 6. public static void main (String args[]) { 7. Test t = new Test(); 8. Bar newBar = t.doBar(); 9. System.out.println(“newBar”); 10. newBar = new Bar(); 11. System.out.println(“finishing”); 12. } 13. } At what point is the Bar object, created on line 3, eligible for garbage collection?() A、 After line 8.B、 After line 10.C、 After line 4, when doBar() completes.D、 After line 11, when main() completes.
若DTR100前面板“AUDIO”口插入耳机话筒组,()面板喇叭被静音。A、当DTR100处于ON-Line状态时B、当DTR100处于OFF-Line状态时C、无论DTR100处于ON-Line还是OFF-Line状态
单选题收紧尾缆 。()ATake in stern line .BPay out stern line .CHeave in stern line .DTake in the slack on stern line .
单选题1. public class A { 2. 3. private int counter = 0; 4. 5. public static int getInstanceCount() { 6. return counter; 7. } 8. 9. public A() { 10. counter++; 11. } 12. 13. } Given this code from Class B: 25.A a1 =new A(); 26. A a2 =new A(); 27. A a3 =new A(); 28. System.out.printIn(A.getInstanceCount() ); What is the result?()A Compilation of class A fails.B Line 28 prints the value 3 to System.out.C Line 28 prints the value 1 to System.out.D A runtime error occurs when line 25 executes.E Compilation fails because of an error on line 28.
单选题Click the Exhibit button. What is the result?()A Line 26 prints "a" to System.out.B Line 26 prints "b" to System.out.C An exception is thrown at line 26 at runtime.D Compilation of class A will fail due to an error in line 6.
单选题Click the Exhibit button. What is the result?()A Compilation of class A fails.B Line 28 prints the value 3 to System.out.C Line 28 prints the value 1 to System.out.D A runtime error occurs when line 25 executes.E Compilation fails because of an error on line 28.
单选题Given the following code fragment: 1) String str = null; 2) if ((str != null) (str.length() 10)) { 3) System.out.println("more than 10"); 4) } 5) else if ((str != null) (str.length() 5)) { 6) System.out.println("less than 5"); 7) } 8) else { System.out.println("end"); } Which line will cause error?()A line 1B line 2C line 5D line 8
单选题1. class Bar { } 1. class Test { 2. Bar doBar() { 3. Bar b = new Bar(); 4. return b; 5. } 6. public static void main (String args[]) { 7. Test t = new Test(); 8. Bar newBar = t.doBar(); 9. System.out.println(“newBar”); 10. newBar = new Bar(); 11. System.out.println(“finishing”); 12. } 13. } At what point is the Bar object, created on line 3, eligible for garbage collection?()A After line 8.B After line 10.C After line 4, when doBar() completes.D After line 11, when main() completes.
多选题10. public class Bar { 11.static void foo(int...x) { 12. // insert code here 13. } 14. } Which two code fragments, inserted independently at line 12, will allow the class to compile?()Aforeach(x) System.out.println(z);Bfor(int z : x) System.out.println(z);Cwhile( x.hasNext()) System.out.println( x.next());Dfor( int i=0; i x.length; i++ ) System.out.println(x[i]);
单选题What is the result?()A Compilation of class A fails.B Line 28 prints the value 3 to System.out.C Line 28 prints the value 1 to System.out.D A runtime error occurs when line 25 executes.E Compilation fails because of an error on line 28.