体重超过下列哪项的胎儿称为巨大儿( )。
A.3000gB.3500gC.4000gD.4500gE.5000g
参考答案:C
解析:[知识点] 胎儿发育异常的分类
English is very widely used ______ business ______ different countries. [ ]
A. for, of
B. for, between
C. to, in
D. as, by
雷管、非电导爆系统试验站危险等级应为()级
A.C级
B.A级
C.D级
D.B级