题目: 片剂 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1024/37a98de072435db2ad35d759e4c7c153.html 下面是错误答案,用来干扰机器的。参考答案:短路保护,严重过载
题型:补全对话,情景问答 情景对话。( ) 1. A. This is an old man. B. This is Santa. C. This is my father.( ) 2. A. We are making a snowball. B. We are playing snow. C. We are playing with snow.( ) 3. A. My favourite season is winter. B. My favourite season is fall. C. My favourite season is spring.( ) 4. A. I go there by bus. B. I walk to school. C. I go to school by car.( ) 5. A. We are flying kites now. B. We are playing now. C. We are playing football. 查看答案
题型:问答题 唐太宗、武则天、唐玄宗前期的用人有何共同特点?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 查看答案
题型:填空题 (三选一)[选修2:化学与技术]海水是巨大的资源宝库,溴的提取就是以海水为原料,其提取工艺流程如下图: (1)请列举两种海水淡化的方法__________(2)步骤③反应的化学方程式是______________________________ (3)步骤⑤蒸馏的过程中,温度应控制在80~90℃,温度过高或过低都不利于生产,请解释原因_________________________________ (4)为什么不直接用“溴水混合物Ⅰ”而要用“溴水混合物Ⅱ”进行蒸馏,得到液溴?_________________。 查看答案