把木头锯成3段要6分钟,照这样计算,锯成6段要______分钟.
6÷(3-1)×(6-1),
=6÷2×5,
=15(分钟),
答:锯成6段要15分钟.
故答案为:15.
--- Hi, Kate, can I use your bike for a while this afternoon?
--- Sorry.??__________?.
A.It’ s repaired?
B.It has been repaired
C.It’s being repaired?
D.It had been repaired
按照隧道施工爆破作业安全技术要求,当发现有“盲炮”时,必须由( )按规定处理,确保安全。
A.设计单位人员 B.监理单位人员C.施工单位人员 D.原爆破人员