调节血管舒张的物质是()
A.乙酰胆碱
B.PGI2
C.NO
D.TXA2
E.ET
参考答案:A, B, C
---Jenny, I think I’ll just have some coffee for a change.
--- ____.The coffee I bought yesterday is in the cupboard.
A.Change it, please
B.Never mind
C.With pleasure
D.Help yourself
常见的全颌覆盖式种植义齿依据其固位形式的不同进行分类,不包括在内的是()
A.杆卡附着式种植义齿
B.球状附着式种植义齿
C.螺丝固定式种植义齿
D.磁性附着式种植义齿
E.套筒冠附着式种植义齿