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"免
电话"或类似的设备,让被访者应免查
研究人员的真实性.
电话,免电话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"免电话"或类似的设备,让被访者应免查研究人员的真实性.
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