患者女，13岁，凸面型，鼻唇角正常，面下1／3稍短，颏唇沟深。前牙Ⅲ度深覆，覆盖5mm，磨牙远中尖对尖关系，上颌拥挤6mm，下颌拥挤6．5mm

该患者制定治疗计划需进一步了解的内容重要性最低的是（）

A.上下前牙唇倾度

B.上下颌骨的长度

C.第三磨牙的牙胚存在与否

D.Bolton指数

E.Spee曲线的曲度

鼓励合营企业向中国境外销售产品。( )

A. An equity joint venture shall encourage to market its products outside China.
B. An equity joint venture shall be encouraged to marketing its products outside China.
C. An equity joint venture shall encourage to market its products from outside China.
D. An equity joint venture shall be encouraged to market its products outside China.