【简答题】衡量一个工艺是否合理,主要是从质量、()、生产耗费三个方面去评价。
【简答题】MM440 变频器频率控制方式由参数 设定。
【单选题】下面程序的结果是 #include<iostream.h> class A { public: A( ) {cout<<'construtA'<<endl;} virtual~A( ) {cout<<'destructA'<<endl;}}; class B:public A {}; class C:public A {}; c
B.
constructA constructA destructA destructA
C.
constructA constructA constructA destructA destructA destructA
D.
constructA onstructA constructA constructA destructA destructA destructA destructA
【单选题】下面程序的结果是 #include<iostream.h> class test{ private: int num; public: test( ); int getint( ) {return num;} ~test( );}; test::test( ) { num=0;} test::~test( ) { cout<<'Destructor is active'<<endl;} void
A.
Exiting main Destructor is active Destructor is active Destructor is active
B.
Exiting main Destructor is active Destructoris active
C.
Exiting main Destructoris active
【判断题】( )对于定位公差,公差带位置与被测要素有关。
【单选题】下面程序的结果是 #include<iostream.h> class A { public: A( ) {cout<<'construtA'<<endl;} virtual~A( ) {cout<<'destructA'<<endl;}}; class B:public A {}; class C:public A {}; class D:public B,public C {}; void m...
B.
constructA constructA destructA destructA
C.
constructA constructA constructA destructA destructA destructA
D.
constructA onstructA constructA constructA destructA destructA destructA destructA
【单选题】下面程序的结果是 #include<iostream.h> class A { public: A(){cout<<'construtA' <<endl;} virtual ~A() {cout << 'destructA' <<endl;}}; class B:public A { }; class C:public A { }; class D:public B,public C { }; v...
D.
constmctA destructA constructA constmctA constructA destructA constructA constructA destructA destructA constructA destructA dest