钢锭由冒口、锭身和水口三部分组成.
参考答案:对
—Please remember, kids. ______ careful you are, _______mistakes you will make.
—We know, Mr. Li.
A.the more; the little
B.the fewer; the more
C.the more; the fewer
D.the more; the less
已知函数y=y(x)在任意点x处的增量
,其中a是比Δx(Δx→0)高阶的无穷小,且y(0)=π,则y(1)=______.
A.
B.2π C.π D.