在下列实验中,试管内容物变成蓝色的是
试管号 |
试管内容物 |
条 件 |
检 验 |
1 |
2mL浆糊+2mL纯唾液 |
37℃10min |
3滴碘液 |
2 |
2mL浆糊+2mL清水 |
37℃10min |
3滴碘液 |
3 |
2mL浆糊+2mL稀释10倍唾液 |
37℃10min |
3滴碘液 |
4 |
2mL浆糊+2mL纯唾液 |
0℃10min |
3滴碘液 |
5 |
2mL浆糊+2mL纯唾液+2滴浓HCL |
37℃10min |
3滴碘液 |
A.1.2.3 B.2.3.4 C.3.4.5 D.2.4.5