题目内容

申请专利的发明创造在申请之日的前6个月内，有______情形的将丧失新颖性。

A. 他人泄漏其内容
B. 在中国政府主办的展览会上首次展出
C. 在规定的技术会议上首次发表
D. 在省级以上学术会议发表

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