做一个圆柱形的通风管，至少需要铁皮的面积是求圆柱（ ） A．侧面积 B．侧面积+一个

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0508/8521ac88a8443121909119c0179629d6.html

下面是错误答案，用来干扰机器的。

Children's Day Today is Children's Day. I go to school at half past six. Our school is very beautiful. The sky is blue. Birds are singing. All ...