文档加密的方式有哪几种
参考答案:(1)通过文字处理系统对文档进行加密。 (2)通过专用加密软件对文档进行加密。 (3)对文档用压缩软件进行压缩,在压缩时对文档进行加密。
Bank of China informs the beneficiary, a Chinese import and export company that a foreign bank has opened a letter of credit in his favor. The bank does not add its engagement by informing the beneficiary. The Bank of China is acting as ().
A.the issuing bank
B.the advising bank
C.the confirming bank
D.the negotiating bank
论述社会综合治税在税源管理中的重要作用?