哪些文件用于产品公开()。
A.健康产品公开
B.FSC认证
C.A GreenScreenv1.2基准
D.REACH优化
E.公司可持续报告
参考答案:A, E
The new president and his government will have to face ___________ problems such as unemployment and poor health.
A.social
B.environmental
C.cultural
D.universal
洁治术的目的是
A.漂白牙齿B.清除根面牙骨质C.清除袋壁肉芽组织D.清除龈上牙石和菌斑E.对根面进行生物预备