对于大多数Ⅱ类错,矫正其前牙深覆盖远中磨牙关系的有效方法是()
A.近中移动下颌
B.远中移动上颌
C.抑制上颌向前的发育
D.近中移动上颌,
E.抑制下颌过度发育
参考答案:A
Which of the following statements about the experiment mentioned in the passage is true
A.Only the twins are defected.
B.Most of the babies are delivered by means of Caesarean.
C.There are some troubles during all mothers' pregnancies.
D.One baby appears to be abnormal.
下列哪项是《信息技术服务质量评价指标体系》标准的基础?()
A.服务质量改进模型
B.服务质量模型
C.服务质量特性
D.服务质量评价指标