For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast ,because processing power was also expensive.

A．users

B．programmers

C．computer

D．program

下列关于气雾剂的叙述，错误的是（）

A.气雾剂主要通过肺部吸收，吸收的速度很快，不亚于静脉注射

B.吸入气雾剂的粒径愈小愈好

C.小分子化合物易通过肺泡囊表面细胞壁的小孔，因而吸收快

D.吸入气雾剂起效迅速的原因主要是由于肺部的吸收面积巨大

E.通常吸入气雾剂的药物微粒大小在1～10μm范围内最适宜