乳前牙反最佳矫治年龄为（）。 A.1～2岁 B.3～5岁 C.6～7岁 D.8～9岁 E.无需矫治，待恒牙期再作矫治 ["1～2岁","3～5岁","6～7岁","8～9岁","无需矫治，待恒牙期再作矫治"]
多普勒超声监测颅脑手术坐位气栓的发生率可达（） ["15%","20%","30%","40%","50%"]
.地高辛药物浓度超过多少应考虑是否药物中毒（） ["1.0ng/ml","1.5ng/ml","2.0ng/ml","3.0ng/ml","2.5ng/ml"]
查看模块当前话务量大小的简单方法是（） ["查看GNET板","查看MPU板","查看OPT办","查看话统结果"]
简述外伤性脑肿胀的发生机制。
简述Glasgow昏迷评分法。
