Handwashing time｜洗手时长

原创练习题 / Practice question

Before food preparation, how long must the complete handwashing procedure last?

开始备餐前，一次完整的规范洗手流程至少持续多久？

1. 5 seconds / 5 秒
2. 20 seconds / 20 秒
3. 10 seconds / 10 秒
4. A quick splash / 只冲一下

答案与解析 / Answer and explanation

20 seconds. The whole procedure takes at least 20 seconds; vigorous rubbing takes at least 10–15 seconds.

20 秒。完整流程至少 20 秒；搓洗阶段至少 10–15 秒，两者不要混淆。