对热不稳定，在空气中容易风化，有较强的氨臭味的是（）。A、食粉 B、碳酸钠 C、碳酸氢铵 发布时间：2018-03-04 19:20 │ 来源：www.tikuol.com 题型：单项选择题 问题： 对热不稳定，在空气中容易风化，有较强的氨臭味的是（）。A、食粉B、碳酸钠C、碳酸氢铵D、碳酸氢钠
题型：单项选择题 阅读理解。 In England people can go to see a doctor nearby when they are ill. When the doctor see them, they usually ask about their troubles and soon give them a prescription (处方) for some medicine. Usually, when people feel ill, they go to see their doctors. But when they only have a cold, they don't go to see their doctors. They usually go to the medicine shop to buy some medicine. Only when they areterribly ill, the doctor will go to their houses. In an emergency (紧急), people can call 999for an ambulance.The ambulance can take them to the hospital very soon. When they are in hospital, their friends or familiescan go to see them at a certain time, but they can't stay long. Usually people have to pay for the doctors' prescriptions. And the price is the same for any kind ofmedicine. But when children, students, old people or people without jobs go to see their doctors, they don'thave to pay for their prescription. 1. When people are ill in England, they'll ______. [ ]A. go to see the doctor nearby B. go to the medicine shop C. ask the doctor to their housesD. call 999 for an ambulance 2. If people have a cold, they usually ______. [ ]A. go to see a doctor B. buy some medicine themselves C. ask to be in hospital D. go to the hospital at a certain time 3. What does the underlined words "ambulance" in the second paragraph mean? [ ] A. 救援 B. 报警 C. 救护车 D. 担架 4. When people without jobs go to the doctors, they ______. [ ]A. get free medical care at homeB. get free prescriptionsC. get free medicine in the hospitalD. get free medicine in the medicine shop5. Which of the following is not true? [ ]A. If people lost their jobs, they'll get free prescriptions. B. In an emergency, people can call 999 for help. C. people can see friends in the hospital at a certain time.D. All the medicine has the same price in England. 查看答案
题型：单项选择题 患者女，29岁，高血压病史2年，偶有手足搐搦。查体：BP（170～210）/（100～130）mmHg。实验室检查：血钾3.4mmol/L，24h尿钾27mmol，尿蛋白（+～++）。可以鉴别原发性或继发性醛固酮增多症的是（）.A.血浆血管紧张素Ⅱ测定B.血浆肾素活性测定C.血浆ACTH测定D.放射性碘化胆固醇肾上腺扫描E.赛庚啶试验测血浆醛固酮 查看答案
题型：单项选择题 硝酸银受热分解，2AgNO3 ====2Ag+2NO2↑+O2↑，设反应中生成NO2 300 mL，用排水法收集生成的气体，收集到的气体（体积在同温同压下测定）是[ ]A．O2，体积是75 mL B．NO，体积是40 mL C．NO2，体积是100 mLD．O2，体积是150 mL 查看答案