常用的缩分方法有:()
A、堆锥四分法
B、九点法
C、棋盘法
D、筛分法
参考答案:A, B, C
—We’ll study in different schools next term. Enjoy your time in the new school!
— __________.
A.I’ll take your advice
B.The same to you
C.Me too
D.Congratulations
钻井设计不能根据钻探深度选择钻机装备