△ABC满足:内角B是A与C的等差中项,边b是 a与c的等比中项,则△ABC的形状为 ;
等边三角形
下列程序的输出结果是______。 #include <iostream> using namespace std; class Test public: Test()cnt++; ~Test() cnt--; static int Count() return cnt; private: static int cnt; ; int Test::cnt=0; int main() cout<<Test::Count()<<’’; Test t1,t2; Test*pT3=new Test; Test*pT4=new Test; cout<<Test::Count()<<’’; delete pT4; delete pT3; cout<<Test::Count()<<endl; return 0;
糖原合成的关键酶是
A.葡萄糖激酶
B.醛缩酶
C.糖原合酶
D.UDPG焦磷酸化酶
E.磷酸葡萄糖异构酶