A. 手如柔荑 B. 所谓伊人 C. 肤如凝脂 D. 螓首蛾眉
A. 0.70fPK,0.65fPYK B. 075fPYK,075fPTK C. 0.90fPYK,0.85fPYK D. 0.95fPYK,0.90fPYT
A. 正确 B. 错误
A. ZnSO4和HCl B. ZnSO4和NaOH溶液 C. SnCl2和NaOH溶液