CPU能够直接访问的存储器是( )。
A．软盘
B．硬盘
C．RAM
D．CD-ROM
参考答案：C
解析：CPU读取和写入数据都是通过内存来完成的。
— We could have asked Miss Keller for help. She is always kind-hearted.
— Yes. A whole day _____. [ ]
A. will waste
B. had wasted
C. was wasted
D. would be wasted
国家平面控制网数据处理依据的基准面是（）
A.大地水准面
B.水准面
C.任意投影面
D.参考椭球面
