正确的三视图是（）
A:
B:
C:
D:
A:
B:
C:
D:
举一反三
- 对于下列已达平衡的反应体系，若压缩容器体积，增加体系总压力，平衡正向移动的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/326095eaba6d40a3bc4057c25f7eae82.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/c8f59ca38f9a41db94d913281b203ada.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/41aeceac712749ada229b477082c26aa.png" /> <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /> <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/0084729e370b40eab5afb29706560d04.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/f92df5cfb06d4322aca5548a0937215a.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8fd7733b85054932be29f9c24c10f538.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/bfdf951768ce48989962f5ffbf5b8a97.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/d5573e1b78574bdf970effa5e9509ef4.png" /><img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/6661619fa794442781036239c942bac3.png" />
- 以下三视图投影正确的是（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/409405865227458ca6c469f162933461.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/ba292c1fa8d44cd18c9218f02b6b0729.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/fcae4be4443240899074ee15cf539c6a.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/210e9147cda14ec1a4479d10a066a239.png" >
- 函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/80d8f8a04b644504a6d2e40a33d0eb32.png" >的<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/4b92518ac6a14134a358c16900e875c0.png" >阶麦克劳林公式为（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/7c2994f9242c43379c6a106d5bd92658.png" >； B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/2145f14f27224b189e702d3390e0a9ba.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/9ef01b77e76241d9b67b1c7c8cd0eea1.png" >； D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/a0feec59ac5046839ecb5324b27717e0.png" >；
- 以下三视图中投影正确的是（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/9b8e16b5f10f4b0e82a8e195ac36b28c.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/6acd50082fd1445baac14a22fcdb9a84.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/721f4c5fd09c412d94f76ab2ae4f2bba.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/99ec7f31ff0847879b3a20bf1ae45922.png" >
- 两个平行的“无限大”均匀带电平面,其电荷面密度分别为+σ和+2σ,如图所示,则A、B二个区域的电场强度分别为（设水平向右为正方向）：()<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/78e393cd69774cd39a6b01baab32e20c.png" > A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/3df0f391d8d744bd98dc43b9717002d4.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/f87c5783dc7b4f5d98e57cd626b5c95b.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/9b859042c4284348a9524474ad08eafd.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/61f01893798a4d17965826ac6341e587.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8b8f9aea022c4e6ca7ac133abc21c16a.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/6fd6170aa1f9495c8e27a96b368c374a.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/8c0c545adfb54d5d88cfa429928d1302.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/17de9a98804d4ec09e06a5f8bce2f890.png" >