某患者，缺失，用钴铬合金整铸支架进行修复1年以后，上隙卡折断，用激光焊接时需选用以下哪种焊丝进行焊接()

A．含碳低的钴铬合金丝

B．含碳高的钴铬合金丝

C．钛丝

D．白合金丝

E．不锈钢丝

States should respect international law even if some people are skeptical about its power to be enacted.