What is the main advantage of a rain barrel system?

题目
单选题
What is the main advantage of a rain barrel system?
A

It benefits the Earth by recycling water.

B

Its efficiency increases in areas with little rainfall.

C

It utilizes technology that is centuries old.

D

It results in lower utility payments.

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相似问题和答案

第1题:

If this source code is contained in a file called SmallProg.java, what command should be used to compile it using the JDK?()   public class SmallProg {   public static void main(String args[])  { System.out.println("Good luck!"); }  }  

  • A、java SmallProg
  • B、avac SmallProg
  • C、javac SmallProg.java
  • D、java SmallProg main

正确答案:C

第2题:

what is the advantage of policing opposite to shaping?


正确答案: (1)policing does not require extra memory, and it does not impose variable delay.But shaping requires memory for buffering excess traffic, which creates variable delay and jitter;
(2)Policing can re-mark traffic, but traffic shaping does not re-mark traffic.
(3)Policing can be applied to the inbound and outbound traffic (with respect to an interface), but traffic shaping applies only to outbound traffic.
1.policing dost not require extra memory.
2.policing can remark traffic.
3.policing can be used to inbound and outbound traffic.shaping is used only in outbound.

第3题:

LTE中『____』基于主同步信号和辅同步信号进行的。(What carries on basing on the main synchronized signal and the auxiliary synchronized signal in LTE system『____』.)


参考答案:小区搜索
cell searching

第4题:

Given the command line java Pass2 and:  public class Pass2 {  public void main(String [] args) {  int x=6;  Pass2 p = new Pass2();  p.doStuff(x);  System.out.print(” main x = “+ x); }  void doStuff(int x) {  System.out.print(” doStuffx = “+ x++);  }  }  What is the result?() 

  • A、 Compilation fails.
  • B、 An exception is thrown at runtime.
  • C、 doStuffx = 6 main x = 6
  • D、 doStuffx = 6 main x = 7
  • E、 doStuffx = 7 main x = 6
  • F、 doStuffx = 7 main x = 7

正确答案:B

第5题:

public class Pass{ public static void main(String[]args){ int x=5; Pass p=new Pass(); p.doStuff(x); System.out.print("mainx="+x); } void doStuff(intx){ System.out.print("doStuffx="+x++); } } What is the result?()

  • A、Compilation fails.
  • B、An exception is thrown at runtime.
  • C、doStuff x=6 main x=6
  • D、doStuff x=5 main x=5
  • E、doStuff x=5 main x=6
  • F、doStuff x=6 main x=5

正确答案:D

第6题:

what is the advantage of policing?


正确答案: (1)bandwidth management through rate-limiting.
(2)packet marking through ip precedence, QOS group, DSCP value setting.

第7题:

public static void main(String[] args) {  String str = “null‟;  if (str == null) {  System.out.println(”null”);  } else (str.length() == 0) {  System.out.println(”zero”);  } else {  System.out.println(”some”);  }  }  What is the result?()

  • A、 null
  • B、 zero
  • C、 some
  • D、 Compilation fails.
  • E、 An exception is thrown at runtime.

正确答案:D

第8题:

static void test() throws RuntimeException {  try {  System.out.print(”test “);  throw new RuntimeException();  }  catch (Exception ex) { System.out.print(”exception “); }  }  public static void main(String[] args) {  try { test(); }  catch (RuntimeException ex) { System.out.print(”runtime “); }  System.out.print(”end “);  }  What is the result?() 

  • A、 test end
  • B、 Compilation fails.
  • C、 test runtime end
  • D、 test exception end
  • E、 A Throwable is thrown by main at runtime.

正确答案:D

第9题:

Public class test (  Public static void main (String args[])  (  System.out.printIn (6 ^ 3);  )  )   What is the output?()


正确答案:5

第10题:

What is an advantage of using an HMC rather than IVM for system management?()

  • A、Support for a single VIO Server environment
  • B、Adapters can be dedicated or virtual for each LPAR environment
  • C、Interfaces with Systems Director to manage the Power Systems servers
  • D、Supports multiple Power Systems servers from a single point of control

正确答案:D

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