流体的连续性方程
Which of these can not be used in defining policies?() ["time of day","user agent","proxy port","usage quota"]
体外预应力体系存在()缺点。 ["A.防腐保护胶困难 ","B.与混凝土无粘结 ","C.锚固区及转向区应力较集中 ","D.拉力较小不能充分发挥体外索强度高的特点 ","E.与混凝土变形不一致容易造成预应力损失"]
收费不适合用于()。 ["军队","司法","基础教育","公共事业开支"]
“孤岛文学”成就突出的是()和历史剧。
为什么贴现率不宜直接作为折现率?