Which methods allow COM components to be used in .NET applications？（）

A . df = new DateFormat(); B . df = Date.getFormat(); C . df = date.getFormat(); D . df = DateFormat.getFormat(); E . df = DateFormat.getInstance()

A . Direction d = NORTH； B . Nav.Direction d = NORTH； C . Direction d = Direction.NORTH； D . Nav.Direction d = Nav.Direction.NORTH；

A . public int compareTo(Object o){/*more code here*/} B . public int compareTo(Score other){/*more code here*/} C . public int compare(Score s1,Score s2){/*more code here*/} D . public int compare(Object o1,Object o2){/*more code here*/}

A . Foo{public int bar（）{return 1；}} B . new Foo{public int bar（）{return 1；}} C . new Foo（）{public int bar（）{return 1；}} D . new class Foo{public int bar（）{return 1；}}

A . Change line 2 to：public int a； B . Change line 2 to：protected int a； C . Change line 13 to：public Sub（） { this（5）； } D . Change line 13 to：public Sub（） { super（5）； }

A . public int compareTo（Object o）{/*more code here*/} B . public int compareTo（Score other）{/*more code here*/} C . public int compare（Score s1，Score s2）{/*more code here*/} D . public int compare（Object o1，Object o2）{/*more code here*/}

A . public int blipvert（int x）{return 0；} B . private int blipvert（int x）{return 0；} C . private int blipvert（long x）{return 0；} D . protected int blipvert（long x）{return 0；} E . protected long blipvert（long x）{return 0；} F . protected long blipvert（int x， int y）{return 0；}

A . IGMP B . IGMP snooping C . PIM D . CGMP E . static assignment F . CDP

A . public int blipvert（int x） { return 0； } B . private int blipvert（int x） { return 0； } C . private int blipvert（long x） { return 0； } D . protected long blipvert（int x） { return 0； } E . protected int blipvert（long x） { return 0； } F . protected long blipvert（long x） { return 0； }

A . Check the tag to see when the extinguisher was last charged B . Release a small amount of CO ; if the CO discharges，the extinguisher is acceptable C . Weigh the extinguisher and compare the weight against that stamped on the valve D . Recharge the extinguisher at least once each year

A . Remove line 14. B . Replace line 14 with "int i = iter.next（）；". C . Replace line 13 with "for （int i ： intList） {". D . Replace line 13 with "for （Iterator iter ： intList） {". E . Replace the method declaration with "sum（List

A . df = new DateFormat（）； B . df = Date.getFormat（）； C . df = date.getFormat（）； D . df = DateFormat.getFormat（）； E . df = DateFormat.getInstance（）；

A . syslog server  B . GUI interface  C . CLI  D . text editor E . TFTP server

A . Automatic B . Dynamic C . Reuse D . Manual

A . first-in， first-out queuing （FIFO） B . priority queuing （PQ） C . custom queuing （CQ） D . weighted fair queuing （WFQ） E . class-based WFQ （CBWFQ） F . low latency queuing （LLQ）

A . public void foo（）{ } B . public int foo（）{return 3；} C . public Two foo（）{return this；} D . public One foo（）{return this；} E . public Object foo（）{return this；}

A . Require a PPTP VPN for all connections to the Web server B . Require that traffic between Web browsers and the Web server uses an L2TP/IPSec tunnel C . Require that traffic between Web browsers and the Web server uses SSL D . Require certificate mappings between the Web server and Active Directory

A .  Public class getClass（） B .  Public Object getSource（） C .  Public Component getSource（） D .  Public Component getTarget（） E .  Public Component getComponent（） F .  Public Component getTargetComponent（）

A . public int compareTo（Object o）{/* more code here */} B . public int compareTo（Score other）{/* more code here */} C . public int compare（Score s1， Score s2）{/* more code here */} D . public int compare（Object o1， Object o2）{/* more code here */}

A .  protected int blipvert（long x） { return 0； } B .  protected long blipvert（int x） { return 0； } C .  private int blipvert（long x） { return 0； } D .  private int blipvert（int x） { return 0； } E .  public int blipvert（int x） { return 0； } F .  protected long blipvert（long x） { return 0； } G .  protected long blipvert（int x， int y） { return 0； }

A . Activating the MySQL Enterprise thread pool plugin B . Relocating your data and log files to separate storage devices C . Disconnecting idle localhost client sessions D . Implementing storage engine data compression optio

A . Change line 2 to：public int a； B . Change line 2 to：protected int a； C . Change line 13 to：public Sub（）{this（5）；} D . Change line 13 to：public Sub（）{super（5）；} E . Change line 13 to：public Sub（）{super（a）；}

A . public class MinMax<？>{ B . public class MinMax<？ extends Number>{ C . public class MinMax<N extends Object>{ D . public class MinMax<N extends Number>{ E . public class MinMax<？ extends Object>{ F . public class MinMax<N extends Integer>{

A . String[] getHeaderNames（） B . String[] getRequestHeaders（） C . java.util.Iterator getHeaderNames（） D . java.util.Iterator getRequestHeaders（） E . java.util.Enumeration getHeaderNames（）