题型:问答题 简答题 Mr. and Mrs. Tailor live in a beautiful village near the sea. [ ]A. too B. very C. more D. many 查看答案
题型:问答题 简答题 瑞芬太尼比芬太尼()A.镇痛作用快而短,可控性强B.镇痛作用强而久C.半衰期长D.可用于椎管内注射E.静脉输注即时半衰期(context-sensitivehalf-timE.不稳定 查看答案