Whenever possible "Freephone" or similar facilities should be provided so that Respondents can check the Researcher's bona fides without cost to themselves.
无论何时,尽可能提供"
电
"或类似的设备,让被访者应查
研究
员的真实性.
总付电,
电Whenever possible "Freephone" or similar facilities should be provided so that Respondents can check the Researcher's bona fides without cost to themselves.
无论何时,尽可能提供"电"或类似的设备,让被访者应查研究员的真实性.
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