判断对刃牙合时下颌应处于()
A.正中关系
B.息止颌位
C.正中牙合位
D.肌位
E.非正中牙合关系
参考答案:C
The affluent middle class created by the Asian boom now take up over from exports as the main engine of growth.
A.take over from exports
B.take from exports
C.take exports
D.takes exports
简述物料的润湿现象。