Cache是CPU和内存之间存取信息的桥梁，它的速度是DRAM的（）倍左右。
A.10
B.5
C.2
D.1
参考答案：A
- How often do you play football?
- _______, but usually twice a week.[ ]
A. It all depends
B. Have no idea
C. As usual
D. In fact
简述测定水中铍的铬天菁S光度法的方法原理。
