1×15÷110,
=15×10,
=2(米);
答:1米的15与2米的110一样长.
故答案为:2.
— Where’s Lucy ? — She ________ in the office. I saw her there just now.
A.can’t be
B.must be
C.can be
D.should be
《高层民用建筑设计防火规范》规定,建筑高度超过100米的高层建筑,其电缆井、管道井应在()楼板处用相当于楼板耐火极限的不燃烧体作防火分隔
A.每隔2至3层
B.每隔2至4层
C.每隔3至4层
D.每层