判断有无咬合异常是通过检查()
A.颞颌关节健康情况
B.有无肌肉疼痛
C.下颌运动时接触
D.上下牙列咬合的石膏模型
E.功能以及肌肉和颞颌关节健康
参考答案:E
—Why does the lake smell terrible?
—Because large quantities of water ________. [ ]
A. have polluted
B. is being polluted
C. has been polluted
D. have been polluted
下列不属于出版物商品竞争的是()。
A.品种竞争
B.质量竞争
C.价格竞争
D.计划竞争