Here is bike my uncle sent me last week. I believe it's fantastic one.
A:a; a
B:the; the
C:the; a
D:a; the
小刚患感冒,发烧一个星期了,体重明显下降。他体内有机物被消耗最多的是( )
①﹣3是函数y=f(x)的极值点;
②﹣1是函数y=f(x)的最小值点;
③y=f(x)在x=0处切线的斜率小于零;
④y=f(x)在区间(﹣3,1)上单调递增.
则正确命题的序号是____.
(2016•山东)一个由半球和四棱锥组成的几何体,其三视图如图所示.则该几何体的体积为( )