Generally, the atoms in metals are typically arranged in one of three common crystal structures:（）,（）, and（）.

A.Face-centered cubic (FCC)

B.Body-centered cubic (BCC)

C.Simple cubic (SC)

D.Hexagonal close-packed (HCP)

正确答案：Face-centered cubic (FCC)；Body-centered cubic (BCC)；Hexagonal close-packed (HCP)