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【判断题】
补骨脂内脂属于简单香豆素A.
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B.
错误
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【简答题】A．She asked for $15. B．She donated $50. C．She requested $20. D．She gave $10.
【简答题】观察（1）tan10°tan20°+tan20°tan60°+tan60°tan10°=1 （2）tan5°tan10°+tan10°tan75°+tan75°tan5°=1 由以上两式成立，推广到一般结论，写出你的推论______．
【单选题】2低温控制轧制获得更细小的铁素体晶粒(可以达到( )μm,相当于ASTMNo12级),使热轧钢板的综合机械性能、尤其是低温冲击韧性有明显的提高。
A.
5
B.
10
C.
15
D.
20
【简答题】A．She applied for a science scholarship and asked for help from her friends. B．She applied for a music scholarship and asked for help from her parents. C．She hasn't thought about this problem. D．She n...
【简答题】A．She goes home for lunch. B．She gets interested in what she is reading. C．She spends her time shopping. D．She doesn't wake up in time.
【简答题】{1}等于酸值和酯值的和。
相关题目：
【单选题】2低温控制轧制获得更细小的铁素体晶粒(可以达到( )μm,相当于ASTMNo12级),使热轧钢板的综合机械性能、尤其是低温冲击韧性有明显的提高。
A.
5
B.
10
C.
15
D.
20
参考解析：
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