微机硬件系统中最核心的部件是
A.内存储器
B.输入输出设备
C.CPU
D.硬盘
参考答案:C
解析: CPU是计算机硬件系统中最核心的部件。
— Are you a visitor here?
— That’s right. I ____ round the world and now my dream of coming to China ____ true.
A.have traveled;has come
B.was traveling had been come
C.am traveling;has come
D.have traveled;has been come
试列举电子商务中物流体系的建立模式,并用合理的事例进行说明。