活髓牙行全冠修复时可采用的粘固剂为( )
A.自凝塑料B.热凝塑料C.所有粘固剂均可采用D.玻璃离子粘固剂E.以上均不正确
参考答案:D
解析: 只有玻璃离子粘固剂对牙髓无刺激性。
The pet dog is warm and loving, It ______ as a daughter of my family.
A.treats
B.treated
C.is treated
D.was treated
配合煤中配入的瘦煤()。
A.结焦性强
B.结焦性差