半衰期30~36小时,最为常用的口服强心苷为()。 A.地高辛 B.洋地黄毒苷 C. 发布时间:2021-07-04 12:57 │ 来源:www.tikuol.com 题型:单项选择题 问题: 半衰期30~36小时,最为常用的口服强心苷为()。A.地高辛B.洋地黄毒苷C.米力农D.多巴酚丁胺E.毒毛花苷K
题型:单项选择题 Landing card Welcome to the United States of America1. First (Given) name: William 2. Date of birth (dd/mm/yy): 12/08/98 3. Flight no. AA3751 4. Number of family members traveling with you: None 5. Country of citizenship: Spain 6. Purpose of visit: To see family 7. Are you carrying any of these things:Food, animal, plants, guns or cash over 10,000? Some chocolate 8. Have you had any illnesses in the last 3 months? No 9. How long will you be staying in the USA? Two weeks 10. Is this your first visit to the USA? No 11. In which city will you spend the most time during your stay? New York 12. What is your next destination? Madrid, Spain 小题1:When is William’s birthday?A.August 8B.December 8C.August 12D.December 12小题2:How long will William stay in the USA?A.Two weeks.B.Two months.C.One week.D.One month.小题3:Where can you find the card?A.At the school.B.In the airplane. C.At the bus stop.D.In the hospital. 查看答案
题型:单项选择题 某元素M的单质1.8g在过量的O2中充分燃烧,得到M2O33.4g,已知M原子核外电子数比核内中子数少1。该元素在周期表中的位置是( )A.第2周期ⅢA族B.第2周期ⅥA族C.第3周期ⅤA族D.第3周期ⅢA族 查看答案
题型:单项选择题 将14g不纯的氢氧化钾样品(杂质不溶于水)放入115.8g水中,充分溶解后过滤(假设操作过程中氢氧化钾和水均无损失)。在所得滤液中加入一定质量的稀盐酸恰好完全反应,得到溶质质量分数为7.45%的氯化钾溶液200g。求: (1)氧氧化钾溶液样品中氢氧化钾的质量分数;(2)稀盐酸溶液中溶质的质量分数。 查看答案