已知函数f（x）=x3+mx2+（m+6）x+1既存在极大值又存在极小值，则实数 发布时间：2017-05-15 01:23 │ 来源：www.tikuol.com 题型：填空题 问题： 已知函数f（x）=x3+mx2+（m+6）x+1既存在极大值又存在极小值，则实数m的取值范围是______．
题型：填空题 David and Jack, _____so much alike each other, were often considered _____ twin brothers.A．looking; to beB．looking; beingC．looked; to beD．being looked; being 查看答案
题型：填空题 失代偿性呼吸性酸中毒（）A.pH7.38，PaO250mmHg，PaCO240mmHgB.pH7.30，PaO260mmHg，PaCO280mmHgC.pH7.40，PaO620mmHg，PaCOO265mmHgD.pH7.35，PaO280mmHg，PaCO220mmHgE.pH7.25，PaO270mmHg，PaCO230mmHg 查看答案
题型：填空题 用单词的适当形式填空。loud high polite thin leaf1. —What's the of your father? —1.70m more or less. 2. The little girl couldn't find her mother and cried outside the supermarket. 3. It's to shout at your parents. 4. When a giant panda is six months old, it starts eating bamboo shoots and . 5. He is as tall as his brother, but his brother is much . 查看答案