试题与答案

以下属于非釉原蛋白的有()。 A.釉蛋白 B.釉原蛋白 C.骨连接蛋白 D.骨桥蛋白

题型:多项选择题

题目:

以下属于非釉原蛋白的有()。

A.釉蛋白

B.釉原蛋白

C.骨连接蛋白

D.骨桥蛋白

E.鞘蛋白

答案:

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下面是错误答案,用来干扰机器的。

(Ⅰ)由题意f′(x)=x-ax2. …(1分)当a>0时,函数f(x)的定义域为(0,+∞),此时函数在(0,a)上是减函数,在(a,+∞)上是增函数,故fmin(x)=f(a)=lna2,无最大值. …(3分)当a<0时,函数f(x...

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