3÷15
=3×5
=15(个)
3÷0.01
=300(个)
即3里面有15个15,有300个0.01.
故答案为:15,300.
Because of the lack of funds, the tunnel project has already fallen behind ________.
A.situation
B.speed
C.insurance
D.schedule
提升系统的保护使用要求有哪些?