《工程建设项目施工招标投标办法》规定，联合体参加资格预审并获通过的，其组成的任何变化都必须在( )征得招标人的同意。

A．投标有效期满之前
B．修改的投标文件标记之前
C．提交投标文件截止之日前
D．修改的投标文件密封之前

Under the International Code of Signals how are geographical locations such as New York City transmitted?（）

A.A commonly used abbreviation such as NYC is used

B.The name is spelled out

C.The geographical coordinates are used

D.The radio station call sign for the nearest marine radio station is used