牙尖交错时下颌骨的位置称()
A.牙位
B.正中关系位
C.下颌姿势位
D.颌位
E.息止颌位
参考答案:A
______ do you have math? [ ]
A.On Monday, Wednesday, and Friday
B.In Monday, Wednesday, and Friday
C.At Monday, Wednesday, and Friday
D.Around Monday, Wednesday, and Friday
下列化合物具有解痉镇痛和散瞳作用的是()
A.巴豆苷
B.柯桠素
C.喜树碱
D.肉桂鞣质A
E.莨菪碱