下列极限计算正确的是

A 1 B -1 C <img src="https://www.beizhujiaoyu.com/uploads/202208/164845169825491.png" width="15" height="33" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164845170391871.png" width="34" height="33" />

A 2xcosx4 B x2cosx4 C 2xsinx4 D x2sinx4

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164845013141161.png" width="82" height="34" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164845013755591.png" width="63" height="34" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164845014375481.png" width="70" height="34" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164845014793011.png" width="72" height="34" />

A 高阶无穷小 B 低阶无穷小 C 同阶但非等价无穷小 D 等价无穷小

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164844949281911.png" width="17" height="32" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164844949656061.png" width="17" height="32" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164844950083991.png" width="16" height="32" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164844950619251.png" width="16" height="32" />

A 0．6 B 0．75 C 0．85 D 0．9<p>

A [0，1)∪(1，3] B [1，3] C [0，1) D [0，3]

A 一定有定义 B 一定有f(x0)=A C 一定连续 D 极限一定存在

A 0 B <img src="https://www.beizhujiaoyu.com/uploads/202208/164845229548271.png" width="78" height="31" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164845239524861.png" width="77" height="32" /> D e2—1