（ ）
举一反三
- 如下电路图可实现一个半加器功能，若A，B为两个二进制加数，则S为这两个数的和，C为两个数相加向高位的进位。[img=484x321]17d60e9b4e908ec.jpeg[/img]（ ）
- 设k为回归模型中的参数的个数，n为样本容量。则对多元线性回归方程进行显著性检验时，所用的F统计量为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/59dd165156f0433a894c262b803f3468.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/df6d58a1849a4c459723f9a8a5570d6f.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/05d14ea808d14379a8e35f887047b62d.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/a5f32d6ed1ea4e76adfb3c9d7091338e.png" />
- 设<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/ffe0ebdfcaee48ebb2791a2b5da2771c.png" />为二部图，且<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/c03c8edb6dae440583b21c00839c7ee6.png" />，则<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/aa9ebacad6f3418f81383e422c156c77.png" />不存在完美匹配。（ ）
- 逻辑函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/520c51d784294a05b7c0a58e9a006f8d.png" />的最小项之和表达式为（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/b29de4567e024993be29cf0772062626.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/c828662b80bf46969b13b8c2e141d796.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/e89e7dff660747259c21fedcc7586e09.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/11fe1998fad740bba3df120af96ae8a9.png" />
- 逻辑函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/7a28ab990f564e25a47249ee94eb1f20.png" />的最简“与－或”表达式为（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/13627d46b788407ea818c87bbc009fe0.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/5df5979516fe45758b8a1e4e729722a6.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/bab1ddffc2c24f4bbace96c67048e662.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/0b57d6e41e5242b2a1999a3beaf9b210.png" />
内容
- 0
比较两个一位二进制数A和B,当A=B时输出F=1,则F的表达式是（ ）。 A: F=A⊙B B: F=AB C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/92cca51ed8dd46e98c023da4ed4a3710.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/63fb5e7770cb421fafe5b574023a5bf9.png" />
- 1
定积分<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/40a96e021d184b53859fdd4926e16b1b.png" />等于（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/cde1094a25c3497f80373bc771f80513.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/54c773851e0348059f1ce37a91a948fc.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/e27823bdfcdc467faf41d0b330b00e15.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/6503ac83a84d4ae2ac241d6c3e33a59a.png" />
- 2
下例说法中正确的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/eac4a5bbdc034ecf81fa8240f4322f34.png" />为周期函数 B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/eac4a5bbdc034ecf81fa8240f4322f34.png" />为多值函数 C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/eac4a5bbdc034ecf81fa8240f4322f34.png" />为单调函数 D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/eac4a5bbdc034ecf81fa8240f4322f34.png" />为有界函数
- 3
下列（ ）不属于中心支撑。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/b7b36299d8fb49c58fa83ef9ce64a739.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/73633e9d8616459490af2a472a7f9649.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/af19ae1f1e1f42ddbd45522c9ddbbea7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/11cef2be0b5b46f6a30e71db95fd8476.png" />
- 4
用OLS估计经典线性模型<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/eb8ed6ad126745fa8aa3e6527980a6fa.png" />，则样本回归直线通过的点是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/64ecbf5286eb4fa083d00e749d64f6f2.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/21b327b2cfb4461aae281b0359e80994.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/fad234b8a5eb41f9bb6ebf585aa414c4.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202103/9355d5aaf7ad484e8231e959141f5d68.png" />