commit bc1fc6d03749734505d4c744a3a7a397bca1bad0 Author: 钟启铭 Date: Mon Aug 17 08:47:27 2026 +0000 CAD diff --git a/Drawing1.dwg b/Drawing1.dwg new file mode 100644 index 0000000..69f47e0 Binary files /dev/null and b/Drawing1.dwg differ diff --git a/Drawing2.dwg b/Drawing2.dwg new file mode 100644 index 0000000..945c959 Binary files /dev/null and b/Drawing2.dwg differ diff --git a/Drawing4.dwg b/Drawing4.dwg new file mode 100644 index 0000000..3087032 Binary files /dev/null and b/Drawing4.dwg differ diff --git a/Drawing75exam.dwg b/Drawing75exam.dwg new file mode 100644 index 0000000..c3a60a3 Binary files /dev/null and b/Drawing75exam.dwg differ diff --git a/drawing3.dwg b/drawing3.dwg new file mode 100644 index 0000000..ad008e9 Binary files /dev/null and b/drawing3.dwg differ