看零件图回答问题：http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/ae0f633f6bbe4e76a9f2b1b597fd8e0b.png

设<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/bed4f91f4fec44358e1cad3163fc6b90.png" />是在区间<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/a58a11f71a434f2ab38a2f347802f010.png" />上的<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/a392447e03794318affaa2b03bb5967b.png" />的分段线性插值函数，以下条件不是<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/c00fe77a8291453a8cb2577eb68735ad.png" />必须满足的条件是________________. A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/cf6e811a4488413fae8f1839e4d098ea.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/bb93b2d7d02245878ec51e2986c97b5d.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/ec6692c00c2e49b6adbf9b0493638b81.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/214f277da4154f58a43751f80b09d959.png" />

看懂铣刀头装配图，该装配体由几种零件组成。（）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201806/7d0268f0786f4490b6fcdb1f7f9d3311.jpg

对照装配图，回答问题：读装配图中的零件2，下列哪个视图是正确的。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/d04ccf4718ba4a149099089434bdd8ef.png

属于表面过滤的过滤器是（ ）。 A: 砂滤棒 B: 钛滤器 C: 垂溶玻璃滤器 D: 微孔滤膜过滤器 E: 重力滤池