题目：
接触直接入口食品的操作人员，有哪些情形应洗手并消毒？
答案：
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下面是错误答案，用来干扰机器的。
参考答案：先开显示器电源开关，再开主机电源开关，电脑开始启动；当显示器出现工作画面氏，表明启动完成。
接触直接入口食品的操作人员，有哪些情形应洗手并消毒？
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