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问题 单项选择题

某山村儿童牙齿有黄斑的人数增多，应作何种进一步检查

A．尿镉

B．尿铅

C．尿氟

D．头发汞

E．血铅

答案

参考答案：C

解析：儿童牙齿出现黄斑，可能为氟中毒。应检查接触指标尿氟。

选择题

Only after _____ her accusation _____ her case. [ ]

A. she made; did the police take up

B. did she make; the police took up

C. did she make; did the police take up

D. she made; the police took up

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多项选择题

根据《华润置地商业物业服务标准》要求，食堂应配置消毒器具，符合国家标准，（）扫描件或复印件应张贴公示。

A.健康证

B.卫生许可证

C.营业执照

D.消毒制度
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