提颌肌收缩增强时,咬合接触点的变化是()
A.减少
B.增加
C.不变
D.没有规律
E.以上均不对
参考答案:B
—I’d prefer to spend this Sunday with my classmates on the seashore.
—________I’m sure you’ll have a good weekend.[ ]
A. What a pity!
B. Sounds wonderful.
C. Let me see.
D. Well done!
货币具备而纸币不具备的职能是( )。
A.流通手段
B.支付手段
C.储藏手段
D.价值尺度