经碱水加热可生成无酯键的醇胺型水解产物的生物碱是() A.药根碱 B.次乌头碱 C. 发布时间:2017-07-02 06:59 │ 来源:www.tikuol.com 题型:单项选择题 B型题 问题: 经碱水加热可生成无酯键的醇胺型水解产物的生物碱是()A.药根碱B.次乌头碱C.东莨菪碱D.莨菪碱B.甲基伪麻黄碱
题型:单项选择题 B型题 完形填空 Now satellites are 1 to forecast (预报) the weather. They are in space, and they can 2 any part of the world. The satellites take pictures of the atmosphere(大气) , 3 this is where the weather forms(形成). They send these 4 to the weather stations. So meteorologists(气象学家) can see the weather of any part of the world. From the pictures , the scientists can often say 5 the weather will change. Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier 6 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the 7 on the ground may soon change, too . In their next weather forecast , the meteorologists can say this. So theweather satellites area great 8 to the meteorologists. 9 satellites were invented, the scientists could forecast the weatherfor about 24 or 48 hours. Now they can make good forecasts for three or fivedays. Soon , perhaps , they may 10 forecast the weather for a week or more ahead(提前) . ( )1. A. help ( )2. A. reach ( )3. A. so ( )4. A. satellites ( )5. A. that ( )6. A. it ( )7. A. clouds ( )8. A. report ( )9. A. Before ( )10.A. can B. to help B. arrive B. because B. pictures B. for B. one B. weather B. luck B. After B. be C. helped C. get C. even C. weather C. where C. ones C. pictures C. helpful C. Since C. be able to D. helping D. go D. and D. space D. how D. them D. trees D. help D. If D. could 查看答案
题型:单项选择题 B型题 患者男性,3岁,因“腹泻”来诊。门诊医师开具环丙沙星注射液50ml,静脉滴注,药师按医嘱抄写注射单。药房环丙沙星注射液规格为100ml(0.2g)/瓶。少量滴注时,患儿开始哭闹,注射部位肿胀,护士重新进针后把100ml环丙沙星全部滴注。回家后患儿哭闹不安,患者家属咨询专业人员后,状告医院并要求经济赔偿。关于环丙沙星,叙述错误的是()A.是第2代喹诺酮类药物B.对铜绿假单胞菌作用较强C.对革兰阴性菌抗菌作用强D.对革兰阴性菌抗菌作用弱E.可用于泌 * * 、呼吸道、胃肠道、皮肤软组织感染F.禁用于孕妇、哺乳期妇女及青春期前儿童G.为浓度依赖性抗菌药物H.为时间依赖性抗菌药物 查看答案
题型:单项选择题 B型题 中和热测定实验中,下列操作一定会降低实验准确性的是A 用滴定管(精量仪器,读数保留到0.01)取所用酸碱溶液的体积B NaOH溶液在倒入小烧杯时,有少量溅出C、大、小烧杯体积相差较大,夹层间放的碎泡沫塑料较多D、测量HCl溶液的温度计用水洗净后才用来测NaOH溶液的温度 查看答案