【简答题】药物常用的剂量是( )|达到一定效应时所需的剂量( )A. 阈剂量B. 效能C. 效价强度D. 治疗量E. ED50
【单选题】Which of the following is the most widely used database architecture?
B.
object-oriented database
【单选题】Pointcast Network is most probably ______.
A.
a company that develops the latest push software
B.
a tool that promotes a company's online marketing
C.
the first company that used an online push software
D.
the most popular software that helps a company push
【简答题】13 下列哪些化合物分子间可以形成氢键。哪些又可以与水分子形成氢键? Which of the following pure compounds can form hydrogen bonds? Which can form hydrogen bonds with water?
【单选题】( ) 的建造,开创了我国桥梁的新类型,是世界桥梁工程中的首创,也是世界上现存最大的敞肩桥。