一国法人到外国进行经济活动，须经外国认许。各国采用的认许制度有（）

A.特别认许制

B.一般认许制

C.相互认许制

D.分别认许制

When cargo is shifted from the main deck into the lower hold of a vessel,（）.

A.The metacenter will move downward

B.The GM will increase

C.The center of buoyancy will move upward

D.The list of the vesel will become great