One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 311 [
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Selection: In the case of heavy metal salt poisoning, the emergency measure is to immediately take ( ). A. Normal saline B. Large amounts of cold water C. Egg white D. Vinegar C. Egg white
Heavy metal salts can cause proteins in the human body to denature; when suffering from heavy metal poisoning, consuming large amounts of protein-rich substances can help detoxify the body, and egg white is a source of protein； Therefore, the answer is C.