甚么是单认证？甚么是双认证？

所谓单认证，是指解决交际部的领事认证，简称单认证。双认证，是指解决交际部领事认证后，还需解决该国领馆的领事认证，简称双认证。 

What is single certification? What is dual certification?

The so-called single authentication, is to solve the consular authentication of the ministry of communication, referred to as single authentication. Double authentication refers to the consular authentication of the country's consulate after solving the consular authentication of the Ministry of Communication, referred to as double authentication.

中国内陆尺简送国际应用，只解决番邦使、领馆领事认证，不解决中国政府领事认证能够吗？

不能够。因为番邦驻华使（领）馆不控制中国国内公证书或商业尺简出证构造的具名或图章存案，难以核实尺简真伪，因此请求尺简务必先经中国交际部领事司或其授权外事办公室认证，而后使（领）馆再确认中国交际部领事司或外事办公室的图章、署名属实。 

China's inland rule simply sends the international application, only solves the foreign embassies, consulates consular authentication, does not solve the Chinese government consular authentication can?

Can't. Because halt China make (get) museum whose native language is not controlled in China notarial deed or business 'Jane his structure named or stamp keep on record, it is difficult to verify size Jane authenticity, so must first request' Jane the consular department of China's ministry of communication, or its authorized certification, the foreign affairs office, and then make (get) museum to reconfirm consular department of China's ministry of communication, or the foreign affairs office's stamp and signature.