网络评估测试时的负载可以分成三种情况(),()和空载。
参考答案:忙时;有载
设点P(x,y),其中x,y∈N,则满足x+y≤3的点P的个数为( )
A.10
B.9
C.3
D.无数
若有以下程序: #include <iostream> using namespace std; class Base public:Base() x=0; int x; ; class Derivedl: virtual public Base public:Derivedl() x=10; ; class Derived2: virtual public Base public:Derived2()( x=20; ; class Derived: public Derivedl,protected Derived2 ; int main() Derived obj; cout<<obj.x<<end1; return 0; 该程序运行后的输出结果是
A.20
B.30
C.10
D.0