土石坝施工有哪些特点?
参考答案:
筑坝材料就地取材,工程量大,施工强度高,施工内运输量大,导游标准高,水文气象因素影响大,根据筑坝材料确定施工参数。
慢性活动型乙型肝炎的肝外表现如:关节炎、皮疹、肾病综合征是由于()
A.Ⅰ型变态反应
B.Ⅱ型变态反应
C.Ⅲ型变态反应
D.Ⅳ型变态反应
E.Ⅴ型变态反应
It is said that his missing books were ______the possession of his former wife and they were valued____500,000$
A.in ; to
B.in; at
C.under; at
D.to; for