多选题A JavaBeans component has the following field： 11. private boolean enabled； Which two pairs of method declarations follow the JavaBeans standard for accessing this field？（）AABBCCDD
多选题
A JavaBeans component has the following field： 11. private boolean enabled； Which two pairs of method declarations follow the JavaBeans standard for accessing this field？（）
A
A
B
B
C
C
D
D
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多选题Which two QoS classification and marking statements are true？ （）AIn a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.BIn an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field.CIn an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.DThe differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.EThe 802.1Q standard uses a three bit field referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
单选题Permanent magnetism is caused by（）.Aoperation of electrical equipment and generators on board shipBthe earth's magnetic field affecting the ship's hard iron during constructionCthe horizontal component of the earth's magnetic field acting on the horizontal soft ironDthe vertical component of the earth's magnetic field acting on the vertical soft iron
多选题A JavaBeans component has the following field： 11. private boolean enabled； Which two pairs of method declarations follow the JavaBeans standard for accessing this field？（）AABBCCDD
单选题bill has an author names field named all editors that calculates a list of possible editors of the doc based on values users has entered into another field. The list only contains users’ first and last names, and only should be displayed to users who can edit doc.Which of the following hide-when formulas should bill use to control the display of the field?（）A @isnotmember(alleditors,@username) B @isnotmember(@name([cn]);@username) C @isnotmember(alleditors;@name([cn ];@username)) D if(@isnotmember(alleditors;@name([cn];@username);@true;@false))
多选题public class Key { private long id1； private long 1d2； // class Key methods } A programmer is developing a class Key， that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key？（）Apublic int hashCode（）Bpublic boolean equals（Key k）Cpublic int compareTo（Object o）Dpublic boolean equals（Object o）Epublic boolean compareTo（Key k）
单选题Which of the following is true about the MPLS header and its EXP field size？（）AThe MPLS header is 2 bytes，and the EXP field is 3 bits long.BThe MPLS header is 1 byte，and the EXP field is 3 bits long.CThe MPLS header is 4 bytes，and the EXP field is 3 bits long.DThe MPLS header is 3 bytes，and the EXP field is 3 bits long.
单选题Which of the following statements is NOT true?（）AThe open field system provided a good opportunity to experiment.BThe open field system wasted land.CThe open field system was wasteful of labor and time.DThe open field system made livestock farming difficult.