判断建筑构件是否达到耐火极限的具体条件有（ ）。 ① 构件是否失去支持能力 ② 构件是否被破坏 ③ 构件是否失去完整性 ④ 构件是否失去隔火作用 ⑤ 构件是否燃烧

A、<span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: " times="" new="" roman";="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-fareast-font-family:="" 宋体"="">①③④</span>

B、<span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: " times="" new="" roman";="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-fareast-font-family:="" 宋体"="">②③⑤</span>

C、<span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: " times="" new="" roman";="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-fareast-font-family:="" 宋体"="">③④⑤</span>

D、<span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: " times="" new="" roman";="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa;="" mso-fareast-font-family:="" 宋体"=""><span style="mso-spacerun: yes"></span>②③④</span>