有效洗手的方法为 A. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 揉搓双手持续15s,范围至手腕上10cm B. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 揉搓双手持续30s,范围至手腕上5cm C. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 揉搓双手持续15s,范围至手腕上5cm D. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 揉搓双手持续30s,范围至手腕上10cm E. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 揉搓双手持续1min,范围至手腕上10cm