设，则当时，有（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/19145d6fbf2248d58fc96a8230497f6b.png
举一反三
- 已知极限则a=0,b=6（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/b97eda7869144de1b30a6b2cb3e0fdfc.png
- 设，则（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/65a0d3434521400ea3cfef4ee4ce833f.png
- 设，则（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/3b5592af1a9946d0860bae2263bcaddd.png
- 设，则 （ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/b9bc88c9887a460d9644f58aa52a54a3.png
- 设，且，则（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/54eb7bb314af4d48acd79bdaed0a3a54.png