A A．a＝1，b＝2 B B．a＝1，b＝－2 C C．a＝－1，b＝－1 D D．a＝1，b＝1

A A．－tant B B．tant C C．－sint D D．cott

A A．α（x）与β（x）是等价无穷小 B B．α（x）是β（x）的高阶无穷小 C C．α（x）是β（x）的低阶无穷小 D D．α（x）与β（x）是同阶无穷小但不是等价无穷小

A A．dx/cosx B B．cotxdx C C．－tanxdx D D．－dx/（cosxsinx）

A A．跳跃间断点 B B．可去间断点 C C．第二类间断点 D D．连续点

A A．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819857_0_1.png"> B B．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819857_0_2.png"> C C．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819857_0_3.png"> D D．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819857_0_4.png">

A A．可能可导也可能不可导 B B．不可导 C C．可导 D D．连续

A A．e^x＜1＋x B B．ln（1＋x）＞x C C．e^x＜ex D D．x＞sinx

A A．充分条件 B B．充要条件 C C．必要条件 D D．无关条件

A A．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819408_0.png"> B B．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819408_0_1.png"> C C．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819408_0_2.png"> D D．<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23819408_0_3.png">