请教Xiao Baitu等高手， ETA-750 B必须双面打印吗？

USCIS网站上提示：
Application for Alien Employment Certification ETA-750B (must be submitted two-sided).

我是单面打印该表格。今天已经邮寄I-140材料。不知道如何办？

所有跟帖： 

• no matter -xiaobaitu- ♀ (0 bytes) () 12/17/2007 postreply 15:26:14

• Thanks a lot. Self-filing is really a tedious work and need much -jjj8888- ♂ (0 bytes) () 12/17/2007 postreply 15:42:28