Why is carbon monoxide called the silent killer?
Giải bởi Vietjack
Đáp án đúng là: A
Giải thích:
Dựa vào câu: Carbon monoxide is called the silent killer because people do not know it is in the air．The gas has no color．It has no taste.
Dịch: Carbon monoxide được gọi là kẻ giết người thầm lặng vì mọi người không biết nó có trong không khí. Chất khí không có màu. Nó không có mùi vị.
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