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问题 单项选择题

以下对模块功能的描述中，正确的是（）。

A.上层模块的任务比较具体

B.下层模块的任务比较抽象

C.非直接上下级模块间不能通信

D.模块调用的顺序是自上而下

答案

参考答案：D

单项选择题

下列叙述与Lidocaine Hydrochloride不符的是()

A．含有酰胺结构

B．酰胺键邻位有2个甲基

C．具有抗心律失常作用

D．与苦味酸试液产生沉淀

E．稳定性差，易水解
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单项选择题

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. thatD. program
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