The survey questionnaires were distributed 400 copies, of which the effective recovery of 354.

面向山西大学图书馆用户共发放正式问卷400份，有效回收问卷354份。

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They were also informed they were being recorded, and participants completed pre - and post-survey questionnaires.

他们还被告知，他们的行为会被记录下来，在试验之前和之后要完成调查问卷。

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Methods:Randomly selected total 160 people from the different public that were carried out the survey questionnaires of CPR knowledge and the skills of CPR training.

方法：随机抽取平凉市崆峒区不同公众共160人，进行CPR问卷调查与CPR技能的培训。

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Skytrax's World Airport Awards are based on 12.1 million survey questionnaires filled out by passengers covering 108 different nationalities and 395 airports worldwide during a nine-month survey period in 2012 and 2013.

CNN: U.S. airports don't stack up

The NFER research was based on a survey of 3, 789 schools which had responded to a similar survey in 2006, plus questionnaires sent to all local authorities in England.

BBC: More primaries teaching languages

Southwest launched a new survey program last year that sends questionnaires to customers the day after they fly.

WSJ: What United, American, Delta, Southwest, JetBlue, Alaska, Virgin America Airlines Learn From Customer Surveys