配料、配酸工序对萃取生产的作用？
参考答案：
为萃取生产提供各种满足萃取技术要求的溶液，保证萃取生产稳定运行的重要环节
若有下列定义和语句：
int u=011,v=0x11,w=11;
printf("%o,%x,%d\n",u,v,w);
则输出结果是( )。
A．9,17,11
B．9,11,11
C．11,11,11
D．11,17,11
He had studied hard, he would have been able to pass the exam.()
A. He had studied harder
B. If only he studied more
C. Had he studied harder
D. When he studied more
