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單項選擇題

A man has suffered a burn on the arm. There is a reddening of the skin but no other apparent damage. Using standard MEDICAL terminology，this is a（）.

A.Minor burn
B.Superficial burn
C.Extremity burn
D.First-degree burn

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單項選擇題

A man has a burn on his arm. There is reddening of the skin，blistering，and swelling. Using standard medical terminology this is a（）.

A.major burn
B.secondary burn
C.second-degree burn
D.blister burn

單項選擇題

A major health hazard of the product tert-butylamine is that it（）.

A.can be absorbed through the skin
B.causes irreversible damage to eye tissue
C.is a very unstable product
D.All of the above