苯与在Lewis酸催化下反应得到（ ）。https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/3700a346734b4c5d80a112b76a8b0486.png
举一反三
- 在催化下与苯反应得不到乙苯的是（ ）。https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/1574c18ce31a47539575bc5838b75cd3.png
- 由苯合成<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/71faeb69bb654ff6bcb8317f2b46e805.png" >不合理的路线是（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/9a43529621dd442aa66725af170e8bbe.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/4ff9332196ec46359a0dcb19181be7aa.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/1a4c85721b604007937a62d2adec1f6a.png" >
- 下列卤代烃既容易发生SN1反应又容易发生SN2反应的是（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/5ba15a546f0c476d830343b8fc31cbe1.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/6425f641c0c84d0481d5a8d9aa35539a.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/fee1d3f625294471b6c9014a08a18808.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/1ead28ce58854bd88a03b1a42c0aabba.png" >
- 已知某变量分布属于钟形分布，且<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/c3c68d24239b47e3908a9fa39d3026e5.png">，则()。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/c289a674c3a949efb63ebfd7f5e17f73.png"> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/14899ead117944fd93b2513951e16161.png"> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/94c95d1322d84ebf9c0a99328b06d62b.png"> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/0f01a113b6e14ec8ac04e74d869aea49.png">
- 已知某系统模拟图如图所示，则该系统数学模型为（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/7b331e776a454b34b3ce7514c85f55ce.png" ><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/9b732439cb324b709c699aa7caf1bd43.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/3a6a819b0f204f1c861fa806fcff9bfa.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/296a376761a64a66a35f073904daa96f.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/201912/6d22be023ff94910a3dc634670220912.png" >