3段是这根钢管的18×3=38,
每段长4×18=12(米).
故答案为:38,12.
- do you want for a party?
-Let's ask Peter for advice. He knows all the parks in this city.[ ]
A. What ; to buy
B. Where ; to go
C. How; to start
在我国,各民族的团结合作,是实现各民族共同繁荣的必由之路。[ ]