• 2021-04-14 问题

    Conversation 2 17.A. He has got a summer job C. He has just visited a park B. He has lost his job D. He has been to the beach

    Conversation 2 17.A. He has got a summer job C. He has just visited a park B. He has lost his job D. He has been to the beach

  • 2022-05-26 问题

    下面表达式的值为true的是。 A: “17”===17 B: “17”==17 C: “17”!=17 D: “17”!==17

    下面表达式的值为true的是。 A: “17”===17 B: “17”==17 C: “17”!=17 D: “17”!==17

  • 2022-06-07 问题

    下列表达式,哪个返回值为true? A: "17"===17 B: "18"==17 C: "17"!=17 D: "17"!===17

    下列表达式,哪个返回值为true? A: "17"===17 B: "18"==17 C: "17"!=17 D: "17"!===17

  • 2022-05-26 问题

    某班30名学生,他们的年龄如下:16 18 15 17 17 19 16 17 18 1717 17 16 16 15 17 17 16 17 1718 17 16 17 17 16 18 17 17 16

    某班30名学生,他们的年龄如下:16 18 15 17 17 19 16 17 18 1717 17 16 16 15 17 17 16 17 1718 17 16 17 17 16 18 17 17 16

  • 2021-04-14 问题

    A.61.31.1.0/17 B.661.31.100.0/17 C.1.31.2.0/17 D.61.31.128.0/17

    A.61.31.1.0/17 B.661.31.100.0/17 C.1.31.2.0/17 D.61.31.128.0/17

  • 2021-04-14 问题

    【单选题】17题 A. 17题A B. 17题B C. 17题C D. 17题D

    【单选题】17题 A. 17题A B. 17题B C. 17题C D. 17题D

  • 2021-04-14 问题

    <p style="font-size: medium;white-space: normal;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">8.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px"><span style="font-family:宋体">下列酯在酸性条件下发生水解反应的速度次序是</span></span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">(&nbsp; &nbsp; &nbsp; )</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px"><span style="font-family:宋体">。</span></span></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">C(CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">)</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH(CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">)</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">A.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;&nbsp;&nbsp;&nbsp;B.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">C.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;&nbsp;&nbsp;&nbsp;D.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span></p><p><br/></p>

    <p style="font-size: medium;white-space: normal;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">8.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px"><span style="font-family:宋体">下列酯在酸性条件下发生水解反应的速度次序是</span></span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">(&nbsp; &nbsp; &nbsp; )</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px"><span style="font-family:宋体">。</span></span></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">C(CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">)</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH(CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">)</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">.CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CO</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">2</span></sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">CH</span><sub><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px;vertical-align: sub">3</span></sub></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">A.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;&nbsp;&nbsp;&nbsp;B.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span></p><p style="font-size: medium;white-space: normal;text-indent: 32px;line-height: 1.25px"><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">C.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&nbsp;&nbsp;&nbsp;&nbsp;D.</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">①</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">②</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">③</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">&gt;</span><span style="font-family: 宋体;line-height: 20px;color: rgb(17, 17, 17);font-size: 16px">④</span></p><p><br/></p>

  • 2022-06-03 问题

    以下程序的输出结果是( )。 main( ){ int k=17; printf("%d, %o, %x n", k, k, k);} A: 17, 0x11, 021 B: 17, 17, 17 C: 17, 021, 0x1 D: 17, 21, 11

    以下程序的输出结果是( )。 main( ){ int k=17; printf("%d, %o, %x n", k, k, k);} A: 17, 0x11, 021 B: 17, 17, 17 C: 17, 021, 0x1 D: 17, 21, 11

  • 2022-06-17 问题

    3×5, 5×7, 7×11, 11×13, 13×17, ( ) A: 17×23 B: 17×19 C: 17×21 D: 17×25

    3×5, 5×7, 7×11, 11×13, 13×17, ( ) A: 17×23 B: 17×19 C: 17×21 D: 17×25

  • 2022-05-26 问题

    (17)0÷(-17)-1=______.

    (17)0÷(-17)-1=______.

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