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[单选题]
在编译指令中，宏定义使用哪个指令（）
A
#if
B
#include
C
#define
D
#error
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参考答案
试题答案：
C
答案解释：
#if条件编译，＃include文件包含，＃error错误处理。
相关题目
当一个类的某个函数被说明为virtual时，该函数在该类的所有派生类中（）
已知f1和f2是同一类的两个成员函数，但f1不能直接调用f2，这说明（）
声明如下数组： int a = {1, 2, 3, 4, 5, 6, 7, 8}; 先查找4的位置，将数组a复制给数组b，然后将数组a的内容反转，再查找4的位置，最后分别输出数组a和b的内容。
#include < iostream, h > class testl { private : int x; public: testl ( ) { x = 2 ; } void set(int a){x =a;} void get( ) { cout << x << endl; } }；class test2{ private: int x; public : test2 ( ) { x = 3 ; } void set( int a) { x = a; } void get( ) { cout << x << endl; } }； class test: public testl, public test2 { private : int x; public:void set( int a) { x=a; } void gettest( ) {cout << x << endl; } }； void main( ) { test a; _________; } }；
一个类中是否可以允许一个无参数构造函数和一个全部都是默认参数的构造函数共存
下列运算符中，在C++语言中不能重载的是（）
下列选项中不是C++语言关键字的是
若Sample类中的一个成员函数说明如下： void set(Sample& a)，则Sample& a的含义是（）
类的析构函数是对一个对象进行以下哪种操作时自动调用的是（）
使用地址作为实参传给形参，下列说法正确的是（ ）
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1.
8．企业二级经营单位凭借自己的优势向竞争对手主动出击以争夺市场而作出的长远谋划属于（）
2.
4.Present pension structures no longer work. They were established inA more youthful period with relatively few older people who were often poorAnd iii,And generally spent onlyA short time in retirement. In richCountries today, older peopleAre often well-offAnd in good health,AndAre spendingAround 20 years in retirement. Therefore there is the need for reform.This survey has presented theArguments for more private fundingAnd for fairer pensions. SuchChanges willCreate motives for individuals to takeCharge of their own retirement needs rather than leaving the task to the state. This, in turn, will make the provision of public pensions moreAfford-Able.Even so, the state willContinue to playA leading role in pensions.AtA minimum, governments must offerA safety net, probably in the form ofADefinedBenefit financed through taxation, for people who for some reason have notBeenAble to provide for themselvesAnd who would otherwiseBe miserable in oldAge. MoreBroadly, there isACase for the state to offerA slimmed-down pay-as-you-go pension system,AlthoughAs farAs possible this shouldBe organizedAlongDefined-contributions lines. Such provision widens the range ofAssets to include humanCapitalBecause the effective returnComes from total wages,And offersA safe if low return.GovernmentsAlso have toCreateA suitable framework for effective private pensions.Administrative(行政的)expenses have toBe tightlyControlled,AndAppropriate tax motives have toBe offered to encourage voluntary pension saving. Where the state providesA generous safety net, private-pension saving may have toBe made mandatory(强制的), otherwise many people will notBother.So much for theDevelopedCountries,But what of the more youthful populations of tile rest of the world? In 1994, the WorldBankCameDown heavily in favor of more funding in privateAccounts. It thought the state's role shouldBe to provideA smallish first pillar with the limited task of providing protectionAgainst old-age poverty,And toCommandA privately-funded second pillar to provide theBulk of pensions.36. More private fundingAnd fairer pensions____.A. Can urge people to save more private-pensionsB. mayBe financed through taxC. Can lessen theBurden of the stateD. Can provide more public pensions
3.
36.“雷电颂”
4.
关于投资性房地产的后续计量，下列说法中不正确的有（）
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陀思妥耶夫斯基后期创作的长篇小说有( )
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