以下为多囊肾的辅助诊断依据的是（）。
A.肾功不全
B.孤立性肝囊肿
C.颅内动脉瘤
D.尿路感染
E.以上都不是
参考答案：C
下列叙述中正确的是( )。
A．栈是“先进先出”的线性表B．队列是“选进后出”的线性表C．循环队列是非线性结构D．有序线性表既可以采用顺序存储结构，也可以采用链式存储结构
He had studied hard, he would have been able to pass the exam.
A. He had studied harder B. If only he studied moreC. Had he studied harder D. When he studied more
