[高级难度真题]截料方法 标签：工程问题
<p>解析：</p><p>截法<font face=" ,Times New Roman">1</font><font face=" ,Times New Roman">2.9</font><font face=" ,Times New Roman">2.9</font><font face=" ,Times New Roman">1.5=7.3</font></p><p><font face=" ,Times New Roman">2</font><font face=" ,Times New Roman">2.1</font><font face=" ,Times New Roman">2.1</font><font face=" ,Times New Roman">1.5</font><font face=" ,Times New Roman">1.5</font><font face=" ,Times New Roman">7.2</font></p><p><font face=" ,Times New Roman">3</font><font face=" ,Times New Roman">2.9+2.1+2.1</font><font face=" ,Times New Roman">7.1</font></p><p><font face=" ,Times New Roman">90</font><font face=" ,Times New Roman">40</font><font face=" ,Times New Roman">1</font><font face=" ,Times New Roman">30</font><font face=" ,Times New Roman">2</font><font face=" ,Times New Roman">20</font><font face=" ,Times New Roman">3.</font></p>
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