储存气瓶仓库周围()m距离以内,不准堆置可燃物品,不准进行()、()等明火工作,也不准吸烟。
参考答案:10;锻造;焊接
Five years ago the population of the village was 2000.Now it’s 1500,which means that it’s
decreased 25%.[ ]
A.to
B.from
C.by
D.for