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【多选题】
能够与羧酸反应生成酰卤的有A.
三卤化磷
B.
五卤化磷
C.
亚硫酰氯
D.
高氯酸
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举一反三
【单选题】It remains to be seen whether the reserves of raw materials in the year 2000 will be sufficient to supply a world economy which will have grown by five hundred percent. Southeast Asia alone will have ...
A.
A worldwide plan to conserve natural resources should be worked out.
B.
The energy consumption of the underdeveloped countries will increase greatly.
C.
The world economy will have greatly grown by the year 2000.
D.
There will definitely be not enough raw materials in the year 2000.
【多选题】肿瘤的二级预防里,适合进行筛检的肿瘤应具备什么特征
A.
发病率较高而且预后严重的恶性肿瘤
B.
应有能被检出的临床前期，最好是有能被检出的扩散前期
C.
有简便经济准确及可接受性强的早期发现的方法
D.
若早期发现，及时诊断治疗，有治愈的可能
【简答题】Healthy eating habits are one of the most important lessons a child learns. Parents can make a plan of action for each child’s nutritional needs. Creating healthy habits Breakfast is necessary to prov...
【简答题】Nowadays, some students have dropped off school to start their own enterprises. They have their own idol: Bill Gates who has left Harvard to devote his energy to Microsoft and became the leader of the...
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