3. 下列实验操作规范的是
<table><tr><td><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/96f25450-de06-4811-834e-af927e563524/2467106fe56317c1.jpg"/></td><td><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/96f25450-de06-4811-834e-af927e563524/73832452c358e77a.jpg"/></td><td><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/96f25450-de06-4811-834e-af927e563524/1029d0b102c1f165.jpg"/></td><td><img src="https://zebfdsytobcavmuynuhx.supabase.co/storage/v1/object/public/review-images/tasks/96f25450-de06-4811-834e-af927e563524/af6606bbb1ad3af9.jpg"/></td></tr><tr><td>A.过滤</td><td>B.排空气法收集 $CO_{2}$ </td><td>C.混合浓硫酸和乙醇</td><td>D.溶液的转移</td></tr></table>
B