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问题 选择题
The students were asked              take the books out of the library.

A. to not to
B. not to
C. not
答案

答案：B

单项选择题

During project execution, a new ISO version of standard 9000 is issued. The project team meets with the quality department to determine how the standard will apply to the project. Which part of the quality process is this

A) Quality analysis.
B) Quality assurance.
C) Quality control.
D) Quality planning.
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填空题
若方程组
x+y=m+2
4x+5y=6m+3
的解是正数，则m的取值范围是______．
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