Both quantitative and qualitative instruments are employed to gather data, including questionnaire, interviews and classroom observation.

作者采用了定量和定性研究工具，如问卷，访谈，和课堂观察。

youdao

Citing privacy concerns, Petrovich also declined to make public any of the documents Gill submitted for government employment, including his Standard Form 86, the questionnaire Gill had to fill out to receive a security clearance.

CENTERFORSECURITYPOLICY: Islamist penetration of Homeland Security?

It allows you to briefly sample data and then asks you to fill out a questionnaire about a recent or current job, including your compensation.

FORBES: How To Know What That Job Pays