1/5单选题
难度：
1.
一实心木块放入水中静止时，露出水面的体积是总体积的2/3，则这木块的密度是水的密度的（ ）
| A | 2/5 |
| B | 3/5 |
| C | 2/3 |
| D | 1/3 |
- 提示1：
- PHA+6KaB55+l6YGT5rW45rKh5L2T56ev5LiO5oC75L2T56ev5LmL5q+U44CCPC9wPg==
- 提示2：
- PHA+5qC55o2uPGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0ZELzg0L3JCQUNGRk1KN0xIeG1Dc1BBQUFEU1VGcWlKczA3Ny5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TEh4bUNzUEFBQURTVUZxaUpzMDc3LnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9Ijc2Ij7orqHnrpfniankvZPlr4bluqbjgII8L3A+
- 提示3：
- PHA+5rW45rKh5L2T56ev5LiO5oC75L2T56ev5LmL5q+U5pivMS8z44CCPC9wPg==
正确答案：RA==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TFRRTXdlWUFBQURNRjJSMEQ0OTc5LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GRC84NC9yQkFDRkZNSjdMVFFNd2VZQUFBRE1GMlIwRDQ5NzkucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iNzIiPuOAguaOkuW8gOa2suS9k+S9k+enr+S4juaAu+S9k+enr+S5i+avlOaYrzEvM+OAgjxicj48L2Rpdj4=
2/5单选题
难度：
2.
一个物体漂浮在液面上，露出液面的体积为V1，液面下的体积为V2，则物体密度与液体密度之比为（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+6KaB55+l6YGT5rW45rKh5L2T56ev5LiO5oC75L2T56ev5LmL5q+U44CCPC9wPg==
- 提示2：
- PHA+5qC55o2uPGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0ZELzg0L3JCQUNGRk1KN0xIeG1Dc1BBQUFEU1VGcWlKczA3Ny5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TEh4bUNzUEFBQURTVUZxaUpzMDc3LnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9Ijc2Ij7orqHnrpfniankvZPlr4bluqbjgII8YnI+PC9wPg==
- 提示3：
- PHA+5rW45rKh5L2T56ev5pivVjxzdWI+Mjwvc3ViPuS4ju+8jOS9k+enr+aYr1Y8c3ViPjE8L3N1Yj4rVjxzdWI+Mjwvc3ViPuOAgjxicj48L3A+
正确答案：Qw==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TFRRTXdlWUFBQURNRjJSMEQ0OTc5LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GRC84NC9yQkFDRkZNSjdMVFFNd2VZQUFBRE1GMlIwRDQ5NzkucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iNzIiPuOAguaOkuW8gOa2suS9k+S9k+enr+S4juaAu+S9k+enr+S5i+avlOaYr1Y8c3ViPjI8L3N1Yj4vVjxzdWI+MTwvc3ViPitWPHN1Yj4yPC9zdWI+44CCPGJyPjwvZGl2Pg==
3/5单选题
难度：
3.
一正方体物体漂浮在水面上，已知露出水面的高度为A，浸入水中的高度为B，则物体的密度为（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+6KaB55+l6YGT5rW45rKh5L2T56ev5LiO5oC75L2T56ev5LmL5q+U44CCPC9wPg==
- 提示2：
- PHA+5qC55o2uPGltZyBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0ZELzg0L3JCQUNGRk1KN0xIeG1Dc1BBQUFEU1VGcWlKczA3Ny5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TEh4bUNzUEFBQURTVUZxaUpzMDc3LnBuZyIgaGVpZ2h0PSI0MiIgd2lkdGg9Ijc2Ij7orqHnrpfniankvZPlr4bluqbjgII8L3A+
- 提示3：
- PHA+5rW45rKh5L2T56ev5pivVjxzdWI+Mjwvc3ViPuS4ju+8jOS9k+enr+aYr1Y8c3ViPjE8L3N1Yj4rVjxzdWI+Mjwvc3ViPuOAgjwvcD4=
正确答案：QQ==
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
4/5单选题
难度：
4.某物体浸在密度为ρ的液体中时，露出1/4的体积，放入另一种未知密度的液体中时，露出1/3的体积，则后一种液体的密度为（ ）
| A | 5ρ/4 |
| B | 9ρ/8 |
| C | 8ρ/9 |
| D | 2ρ/5 |
- 提示1：
- IOW3suefpea2suS9k+WvhuW6puaxguWPpuS4gOenjea2suS9k+WvhuW6pu+8jOeJqeS9k+WvhuW6puaYr+S4remXtOeahOe6veW4puOAgg==
- 提示2：
- IOagueaNrjxpbWcgd2lkdGg9NzYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRkQvODQvckJBQ0ZGTUo3TEh4bUNzUEFBQURTVUZxaUpzMDc3LnBuZyI+77yM5YiG5Yir5rGC5Ye654mp5L2T5a+G5bqm5ZKM5Lik56eN5ray5L2T5YWz57O744CC
- 提示3：
- IOmAmui/h+S4pOS4quWFs+ezu+axguWHuuS4pOenjea2suS9k+WvhuW6puWFs+ezu+OAgg==
正确答案：Qg==
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
5/5单选题
难度：
5.
两个漂浮在水面上的物体，体积之比为2：1，进入水中部分的体积之比为1：2，则这两物体的密度之比为（ ）
| A | 1：4 |
| B | 4：1 |
| C | 1：2 |
| D | 1：1 |
- 提示1：
- PHA+5pyA566A5Y2V55qE5pa55rOV5piv77yM6LSo6YeP5q+U562J5LqO5rWu5Yqb5q+U562J5LqOMToy77yM5Y+I55+l6YGT5L2T56ev5q+U5pivMu+8mjHvvIzlr4bluqbmr5TnrYnkuo7otKjph4/mr5Tmr5TkuIrkvZPnp6/mr5TjgILnrYnkuo4x77yaMumZpOS7pTI6MS48L3A+
- 提示2：
- PHA+55So5pys6IqC6K++5a2m5Lmg55qE5pa55rOV5L2g5Lya5YGa5LmI77yfPC9wPg==
- 提示3：
- PHA+55So54m55q6K5YC85rOV6K+V6K+V5Lmf5b6I566A5Y2V44CCPC9wPg==
正确答案：QQ==
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