日本发展经济的有利条件是[ ]
A.历史悠久,经验丰富
B.有丰富的原材料
C.人口众多,国内市场广阔
D.沿海多优良港湾
答案:D
The first memorial park to the 87,000 dead and missing from China's May 12 earhquake,which was revised the magnitude from 7.8 to 8.0 on the Richter _____,opened on Wednesday in the southwestern Sichuan Province.
A.degree
B.sign
C.scale
D.mark
根据《水工混凝土施工规范》SDJ207—82,水工结构的非预应力混凝土中,不应采用的钢筋是()。
A.热轧钢筋
B.热处理钢筋
C.钢绞线
D.冷拉钢筋