合成高分子卷材铺贴前,应对基层进行清理验收,合格后方可施工。( )
参考答案:对
下面程序输出的结果为 #include" iostream.h" class A public: A( ) cout < < "CLASS A" < < end1; ~ A( ) ; class B:public A public: B( ) cout < < "CLASS B" < < end1; ~ B( ) ; void main( ) A * p; p=new B; B * q; q=new B;
A.CLASS A CLASS B
B.CLASS A CLASS B CLASS B
C.CLASS A CLASS B CLASS A CLASS B
D.CLASS A CLASS B CLASS B CLASS B
A.I= ,从上向下
B.I= ,从上向下
C.I= ,从下向上
D.I= ,从下向上