风险特征描述需满足 Transparency透明度 +Explicitness ×Clarity清晰度 Easy to understand *Consistency-一致性 +Consistent with other EPA actions ×Reasonableness合理性 +Based on sound judgment Risk Characterization Handbook,2000 Transparency透明度  Explicitness  Clarity清晰度  Easy to understand  Consistency一致性  Consistent with other EPA actions  Reasonableness合理性  Based on sound judgment ——Risk Characterization Handbook, 2000