影响纤维含油率的因素有油剂的浓度，上油量，（）。
A、油轮转速
B、紧张定型温度
C、松弛定型温度
D、压辊压力
参考答案：A, D
We often provide our children with toys, footballs or basketballs, _____ that all children like these things. [ ]
A. thinking
B. think
C. to think
D. thought
保留根管内的全部健康牙髓
A．干髓术B．根管充填术C．塑化治疗D．根尖诱导成形术E．活髓切断术
