多选题Which statements about inheritance are true？（）AIn Java programming language only allows single inheritance.BIn Java programming language allows a class to implement only one interface.CIn Java programming language a class cannot extend a class and impl

题目
多选题
Which statements about inheritance are true？（）
A

In Java programming language only allows single inheritance.

B

In Java programming language allows a class to implement only one interface.

C

In Java programming language a class cannot extend a class and implement a interface together.

D

In Java programming language single inheritance makes code more reliable.

相似考题

1.Which of the following statements is NOT true about vagina? ()A、It is a small sensory organ, which is located toward the front of the vulva where the folds of the labia joinB、It is a female’s external reproductive organC、It is a muscular, hollow tube that extends from the vaginal opening to the uterusD、It is shaped like an upside-down pear, with a thick lining and muscular walls

2.Which of the following statements about object oriented databse is not correct?A． Each object has a unique object identity in the system.B．Encapsulation and inheritance are two important features of object oriented databasE.C．A subclass can inherit the attributes and methods of all its superclasses.D．A subclass includes the attributes and methods of all its subclasses.

3.Which of the following statements about Leopold and Rudolph Blaschka is TRUE?A. They were brothers.B. They were artists.C. They were florists.D. They were farmers.

4.●Which of the following statements about object oriented database is not correct? (72) ．(72) A．Each object has a unique object identify in the systemB．Encapsulation and inheritance are two important features of object oriented databaseC．A subclass can inherit the attributes and methods of all its superclassesD．A supereloss includes the attributes and methods at all subclasses

更多“Which statements about inheritance are true？（）         ”相关问题

  • 第1题：

    Which of the following statements about testing software with data is (are) true?

    Ⅰ.The primary purpose of such testing is to find errors.

    Ⅱ.Such testing can demonstrate the existence of errors but cannot demonstrate the absence of errors.

    A．Neither

    B．I only

    C．Ⅱonly

    D．Ⅰand Ⅱ


    正确答案：B

  • 第2题：

    Which of the following statements are true of collectivist culture?

    A、Disclosure of private feeling is distasteful.

    B、People are suspicious of outsiders.

    C、Uniformity is not highly thought of.

    D、there is a positive attitude about words of disagreement.


    参考答案：B

  • 第3题：

    Which of following statements about testing software with data is (are) true?

    Ⅰ.The primary purpose of such testing is to find errors.

    Ⅱ.Such testing can demonstrate the existence of errors but can not demonstrate the absence of errors.

    A．Neither

    B．Ⅰ only

    C．Ⅱ only

    D．Ⅰ and Ⅱ


    正确答案：B

  • 第4题：


    Which of the following statements about California is NOT TRUE？( )

    A.California is a sexually liberated state.
    B.California has a high abortion rate.
    C.About 40% of the pregnant teenagers chose to have an abortion.
    D.A recent poll showed that less than half of the respondents supported the amendment.

    答案：C
    解析：

  • 第5题：

    Which two statements about the Cisco Nexus 1000V VSM are true?（）

    • A、It performs switching decisions and forwarding for the VEM
    • B、It can be run on a virtual machine
    • C、It can be used for remote VEM switching Iine cards

    正确答案:B,C

  • 第6题：

    Which of the following statements is true about a router's eBGP peers that is not  also true about that same router's iBGP peers?（）

    • A、The eBGP peer neighborship uses TCP
    • B、The eBGP peer uses port 180 (default)
    • C、The eBGP peer uses the same ASN as the local router
    • D、The eBGP peer updates its AS_Path PA before sending updates to  this router

    正确答案:D

  • 第7题：

    Which two are true about has-a and is-a relationships？（）

    • A、 Inheritance represents an is-a relationship.
    • B、 Inheritance represents a has-a relationship.
    • C、 Interfaces must be used when creating a has-a relationship.
    • D、 Instance variables can be used when creating a has-a relationship.

    正确答案:A,D

  • 第8题：

    Which two statements are true about standard database auditing（）

    • A、DDL statements can be audited.
    • B、Statements that refer to stand-alone procedure can be audited.
    • C、Operations by the users logged on as SYSDBA cannot be audited.
    • D、Only one audit record is ever created for a session per audited statement even though it is executedmore than once.

    正确答案:A,B

  • 第9题：

    单选题
    Which of the following statements about the golf club is NOT true?
    A

    It’s at the top of the cliff.

    B

    They were not allowed to be in the club.

    C

    They parked the car near the club.


    正确答案： A
    解析：
    根据there was a golf club at the top of the cliff that we weren’t allowed into可见A项和B项说法正确。文中只提到停放汽车，但没有提及停在哪儿。

  • 第10题：

    多选题
    By default, which two statements are true about export routing polices?（）
    A

    Export polices can evaluate only active routes

    B

    Export polices can evaluate all routes

    C

    Export polices can be applied to the forwarding table

    D

    Export polices can be applied to interfaces


    正确答案： B,A
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements about creating constraints are true?（）
    A

    Constraint names must start with SYS_C

    B

    All constraints must be defines at the column level

    C

    Constraints can be created after the table is created

    D

    Constraints can be created at the same time the table is created

    E

    Information about constraints is found in the VIEW_CONSTRAINTS dictionary view


    正确答案： E,D
    解析： 暂无解析

  • 第12题：

    多选题
    Which three statements about subqueries are true? （）
    A

    Asinglerowsubquerycanretrieveonlyonecolumnandonerow.

    B

    Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.

    C

    Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.

    D

    Amultiplerowsubquerycanbecomparedusingthe；>；；operator.

    E

    AsinglerowsubquerycanusetheINoperator.

    F

    Amultiplerowsubquerycanusethe；=；operator.


    正确答案： D,A
    解析： 暂无解析

  • 第13题：

    which of the statements is not true about frederick douglass?

    A. He was the editor of an abolitionist paper.

    B. He was one of the organizers of the Seneca Falls conference.

    C. He taught himself to read and write.

    D. He was born into slavery.


    参考答案：B

  • 第14题：

    Which of the following statements about The Scarlet Letter is NOT true?

    A.It explores man's never-ending search for the satisfaction of materialistic desires.

    B.It relates the conflicts between the society and the individual.

    C.It is about the effect of sin on the people involved and the society as a whole.

    D.It presents a p


    正确答案：B

  • 第15题：

    Which of the following statements about language is NOT true?

    A.Language is a system
    B.Language is symbol
    C.Animals also have language
    D.Language is arbitrary

    答案：C
    解析：
    本题考查语言的定义。
    本题要求选不正确的，C选项，动物也有语言，错误。语言是人类在交际中使用的一套任意的声音符号系统。动物没有语言，动物只是本能发出声音。综上，应选C。
    A选项，系统的，故排除。
    B选项，符号，故排除。
    D选项，任意的，故排除。
    故正确答案为C项。

  • 第16题：

    Which two statements are true about L2TP tunnels?（） (Choose two.)

    • A、Traffic is clear text
    • B、Traffic is encrypted 
    • C、They are initiated by the LNS
    • D、They are initiated by the LAC

    正确答案:A,D

  • 第17题：

    Which two statements about VPLS are true？ （）

    • A、There is a full mesh of pseudowires.
    • B、There is a partial mesh of pseudowires.
    • C、Only L2TPv3 can be used for pseudowire establishment.
    • D、There is split-horizon to avoid loops.

    正确答案:A,D

  • 第18题：

    Which ONE of the following statements about Domino Enterprise server is true？（）

    • A、Can host Active Server Pages Web sites
    • B、Can host PHP Web sites
    • C、Includes a DB2 server
    • D、Includes an integrated Web application server

    正确答案:D

  • 第19题：

    Which statements about inheritance are true？（）         

    • A、 In Java programming language only allows single inheritance.
    • B、 In Java programming language allows a class to implement only one interface.
    • C、 In Java programming language a class cannot extend a class and implement a interface together.
    • D、 In Java programming language single inheritance makes code more reliable.

    正确答案:A,D

  • 第20题：

    Which three statements about subqueries are true? （）

    • A、Asinglerowsubquerycanretrieveonlyonecolumnandonerow.
    • B、Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.
    • C、Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.
    • D、Amultiplerowsubquerycanbecomparedusingthe"；>；"；operator.
    • E、AsinglerowsubquerycanusetheINoperator.
    • F、Amultiplerowsubquerycanusethe"；="；operator.

    正确答案:B,C,E

  • 第21题：

    单选题
    Which of the following statements is NOT true about the postal service?
    A

    American abortionists were not happy about it.

    B

    The stamp was invented in Britain.

    C

    It helped the independence of America.

    D

    In the 1840s it was the major means of national communications in Britain.


    正确答案： B
    解析：
    第五段指出“19世纪，邮政服务奠定了国内和国际交流的基石。邮票的出现、较低的价位和由发信人付费都对邮政服务的发展至关重要。在1840年英国使这些想法都成为了现实”，由此可知选项B（邮票是在英国发明的）和选项D（1840年邮政服务是英国国内交流的主要方式）都符合原文。从文章第六段提到的美国商人可通过邮政服务收集信息，邮政促进废奴思想的传播等可以看出postal service在美国获得独立方面起到了促进作用，因此选项C也正确。文章中并未提到“美国有权流产主义者”对其态度。

  • 第22题：

    单选题
    Which of the following statements is true about a router's eBGP peers that is not  also true about that same router's iBGP peers?（）
    A

    The eBGP peer neighborship uses TCP

    B

    The eBGP peer uses port 180 (default)

    C

    The eBGP peer uses the same ASN as the local router

    D

    The eBGP peer updates its AS_Path PA before sending updates to  this router


    正确答案： B
    解析： 暂无解析

  • 第23题：

    多选题
    Which statements about inheritance are true？（）
    A

    In Java programming language only allows single inheritance.

    B

    In Java programming language allows a class to implement only one interface.

    C

    In Java programming language a class cannot extend a class and implement a interface together.

    D

    In Java programming language single inheritance makes code more reliable.


    正确答案： D,C
    解析： 在java中一个类只能有一个直接父类，但是可以实现多个接口，在继承的同时可以实现接口，之所以取消多继承的原因是多继承使得代码产生很多问题,而使用单一继承则可以使代码更可靠。

  • 第24题：

    单选题
    Which of the following statements is true?
    A

    Scientists have solved the mystery about the fish killer.

    B

    More studies need to be made about the fish killer.

    C

    It is proved that the algae are reducing fish populations.

    D

    Humans have already been affected by the toxin.


    正确答案： C
    解析：
    推断题。从第五段提到的“To understand the killer algae further, scientists must…and determine….They also need to know….”，可知要对这种微生物有进一步的了解，还有更多的研究工作要做。因此选B。

相关内容