计算机存储器分为两大类,即内存和外存。____存放正在运行的程序和数据,____存放暂时不用的程序和数据。
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计算机硬件系统由运算器、____、____、输入设备和输出设备等五大基本部分构成。
图像数字化一般要经过____、____和 ____三____个步骤。
The four basic healthcare system includes_________.
A. The Beveridge Model
B. The Bismarck model
C. The National Health Insurance model
D. The out-of-pocket model
What’re the three basic goals of a health care system?
A. Keeping people healthy
B. Treating the sick
C. Protecting families against financial ruin from medical bills
D. Offering free medical care
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