默写地质年代表?
参考答案:
震旦纪Z、寒武纪∈、奥陶纪O、志留纪S、泥盆纪D、石炭纪C、二叠纪P、三叠纪T、侏罗纪J、白垩纪K、古近纪E、新近纪N、第四纪Q
在轧制生产的实际操作中,确定轧辊原始辊缝的理论基础是弹跳曲线或是弹跳方程。
A.Michelle’s brother ran away from home.
B.Michelle’s mother had another baby.
C.Michelle married the landlord of a local pub.
D.Michelle got pregnant and no one knew who the father was.