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[img]2017m2x/ct_ehbm_ehbreadf_0047_201702[/img] [br] Sneeze droplets could hang
[img]2017m2x/ct_ehbm_ehbreadf_0047_201702[/img] [br] Sneeze droplets could hang
游客
2024-07-15
9
管理
问题
[br] Sneeze droplets could hang in the air for about______.
选项
A、19.68 feet
B、20 minutes
C、100 MPH
D、3 hours
答案
B
解析
本题考查喷嚏飞沫在空气中停留的时间。图片中Did You Know?处列举了4条数字信息。其中Time sneeze droplets hang in the air所对应的数字为20 Minutes。A)为喷嚏传播的距离,C)为喷嚏的速度,D)为手上细菌的存活时间,故B)为正确答案。
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