增溶剂是高分子化合物，助溶剂是低分子化合物。
参考答案：对
She often thinks that he will succeed if he works hard, _____?[ ]
A. doesn't she
B. won't he
C. isn't she
D. doesn't he
低压安全注射系统﹝压水堆﹞ low head safety injection system
