What is necessary to write a good questionnaire? 选择一项： a. A lot of skills and study. b. A lot of money and time. c. A lot of skills and experience.

What is necessary to write a good questionnaire?

选择一项：

a.
A lot of skills and study.

b.
A lot of money and time.

c.
A lot of skills and experience.

出自：国家开放大学管理英语2

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