工作面出现底板鼓起,产生裂隙并逐渐增大,随后底板发生“底爆”伴有剧响时,一般为()。
A.底板水突水征兆
B.老空水突水征兆
C.钻孔水突水征兆
D.陷落柱水突水征兆
参考答案:A
下列程序的运行结果为 【14】 。#include <iostream. h>class myclass private: int a, b, c;public: void fun() int a; a=10; this->,a=5; b=6; this->c=7; cout<<"a="<<a<<",this->a="<<this->a<<endl; ;void main() myclass obj1; obj1.fun()
What does the man mean A. To finish work first. B. To get some rest first. C. To leave the work till tomorrow.