第2题: [单项选择]The downflooding angle for a ship is the maximum angle at which(). A. stability is positive B. neutral equilibrium exists C. the load line is not submerged D. intact stability curves are valid 参考答案:D
第14题: [多项选择]对栓剂基质的要求有 A. 室温下不易软化、熔融或溶解 B. 无毒,无过敏性,对黏膜无刺激性 C. 性质较稳定,不易霉变 D. HLB值比较低,不能混入较多的水 E. 熔点与凝固点相距较远 参考答案:A,B,C 答案解析:[解析] 栓剂的基质要求熔点与凝固点相距较近,且有润湿和乳化能力,能混入较多的水,故DE是错误的。