题目内容

企业信息化发展较为成熟后一种典型的信息化管理机制称为()机制。

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面对一个复杂的系统,人们将其划分为若干子系统,从而降低分析的难度,这种系统方法称为系统的(),或称系统分析。

— Could you do me a favor and take these books to my office?—Yes, ().

A. My pleasure
B. For pleasure
C. With pleasure
D. I could

The visitor () yesterday, but he didn’t.

A. must have arrived
B. need have arrived
C. arrived
D. should have arrived

下列常用来进行无级变速的传动是()

A. 齿轮传动
B. 摩擦轮传动
C. 链传动
D. 蜗杆传动

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