下列化合物中哪个具有芳香性?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/f459ad245e0b421b8c408034349962e2.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/bbd772711b5845fa810365b224ba5b78.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/b9e471ec661a474697375481122a9ae9.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/9f0b52aec3cd4bc8b4d0da7317a27903.png" />

下列计算结果正确的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/46a91374ddb244fab2b2569e4e5c76da.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/13eeb2611b584e26b3cfda4c59f5e808.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/a2d3bc6d966b4e1aa1de82ec98f49aad.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/bf909bdba7004c3782fd3041cf6a8768.png" />

哪个标记用于表示 HTML 文档的结束？( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/6c4425eb00dd44f2a456cd3fa4e18488.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0db52a7ca0c0403d9f0e9f9784a1c655.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0f4f1b4846f940448a74df9e286abc77.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0dfd6a6c8d0f4ed2872185be16c2a849.png" />

下列四种环烷烃的燃烧热,哪个最大?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/5be91d41d31b46d29452ee767404d3ee.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/2f2e0c6325944be08c159693eb20cb6a.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0fe793ac8f0345ff832807bcc91a08b7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/30e54f592a4d4081909d720eea5728c1.png" />

丙烯与HBr加成,有过氧化物存在时,其主要产物是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0508a7ebaaa146a4bf377b608a89a47a.png" />,<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/cb47e5a8d620401fbfe813768a96bc67.png" />各一半 B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/deb8c0a08872446f81a23feb1249b0f2.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/cb47e5a8d620401fbfe813768a96bc67.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/0508a7ebaaa146a4bf377b608a89a47a.png" />

下列化合物中哪个烯醇式含量最高?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/b8c1f16c2fae420eba5626a1dd499b16.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/d5fe0bf9458a424eb10137d0d904c679.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/90c121bf3bb147e68c8a572383979ac1.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/9b3a09d479254944a84386bb59cfcfcc.png" />

下面化合物中,哪一个是β-D-(+)-葡萄糖的对映体?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/002f6b8b00754e73a0a765bed3379ad1.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/4f088c46a4554104b071fda2f3bd0e50.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/07afad29f33b414fb995ec4cfb02b15f.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/658936488ee044a4b8534d46c8e326c4.png" />

下列各异构体中,不与硝酸银醇溶液反应的是( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/46ab1ae1e6fe430ab111f6290f7512d1.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/af681729166e44959bb2a370fe9508e7.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/222ba03c8356460ab14728eccacc1069.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/7f1ef807f4b14ce6bf2fdaf1db046e9a.png" />

家庭装修中常见地板分为哪几类（ ）。 A: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202111/b19a9b77d92f49c88d763a2a3c3d2263.png">实木地板 B: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202111/593fb4c30eea4be881cdf1ceb334785d.png">实木复合地板 C: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202111/ae4bd01a93454abfaae82af1d1e5937b.png">强化复合地板 D: <img src="https://image.zhihuishu.com/zhs/teacherExam_h5/COMMONUEDITOR/202111/dae0a6271e6b41378b5ced9a9f61b4f4.png">塑胶地板

化学法鉴别吡啶和α-甲基吡啶,加入( )。 A: HCl B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/ec29052bf35b43e3ba0473b5cfc6ec40.png" />溶液 C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/ba750919b17e4897b04acbfd77854c18.png" />溶液 D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202111/970b9de687064f8084c971a3335c249b.png" />