Nina Strohminger thinks that the effect of the intervention is[u]        [/u]. A: permanent B: predictable C: uncertain D: unrepeatable 未知类型：{'label': None, 'content': '', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': None, 'content': '', 'isMemberControl': 0, 'type': 181}