Which of the following statements about object oriented database is NOT correct ?

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问题 Which of the following statements about object oriented database is NOT correct ?

选项 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 superclass includes the attributes and methods of all its subclasses

答案D

解析

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笔试

原NCRE全国计算机四级

NCRE全国计算机四级

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Which of the following statements about object oriented database is NOT correct ?

笔试

原NCRE全国计算机四级

NCRE全国计算机四级

______is the address of.a variable or a variable in which the address of another variable is stored.

The______has several major components, including the system kernel, a memory management system, the file system manager, device

Windows系统安装时生成的Documents and Settings、Winnt和System32文件夹是不能随意更改的，因为它们是(16)。在Windows文件系统中，(17)是一个合法的文件名；(18)不是合法的可执行文件的扩展名。

Insufficient(71)can cause a processor to work at 50% or even more below its performance potential.

In(66)the strength of the carder signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address a

In C program, all variables must be(70)before use, usually at the beginning of the function before any(71)statements.

Different quality factors of software can be reflected upon user’s different points of view, through product running, product mo

Atypicalperipheraldevicehas(66)whichtheprocessorusestoselectthedevice’sinternalregisters.

In(75)programming,theuserdeterminesthesepuenceofinstionstobeexecuted,notprogrammer.

UNIX操作系统是_______语言编写的。

患者，女性，36岁。甲状腺部位疼痛，甲状腺肿大，有压痛，诊断为桥本病，以下哪种抗体可升高

产后第4天双乳房胀，乳汁排流不畅，最常见的原因是

银行代理的黄金业务种类有()。

Windows对窗口的操作中不包括()。

箴言：劝诫

手机在各类城市的销售总额是()。

以下程序段中的变量已正确定义for(i=0；i＜4；i++，i++)for(k=1；k＜3；k++)；printf("*")；程序段的输出结果是

LocatedinNewSouthWales,oneofAustralia’smostagriculturally,industriallyandculturallyrichareas,CharlesStrutUniver

______is　the　address　of.a　variable　or　a　variable　in　which　the　address　of　another　variable　is　stored.

The______has　several　major　components,　including　the　system　kernel,　a　memory　management　system,　the　file　system　manager,　device　

Windows系统安装时生成的Documents　and　Settings、Winnt和System32文件夹是不能随意更改的，因为它们是(16)。在Windows文件系统中，(17)是一个合法的文件名；(18)不是合法的可执行文件的扩展名。

Insufficient(71)can　cause　a　processor　to　work　at　50%　or　even　more　below　its　performance　potential.

In(66)the　strength　of　the　carder　signal　is　varied　to　represent　binary　1　or　0.(67)is　a　system　that　can　map　a　name　to　an　address　a

In　C　program,　all　variables　must　be(70)before　use,　usually　at　the　beginning　of　the　function　before　any(71)statements.

Different　quality　factors　of　software　can　be　reflected　upon　user’s　different　points　of　view,　through　product　running,　product　mo