工业上合成盐酸是通过（）和（）在合成炉中点燃后化合生成（）气体，再将其冷却降温，用高纯水吸收制成。
参考答案：氢气；氯气；氯化氢
When you make a decision to buy something, you must remember that a good name of a product
doesn't mean good quality of it. [ ]
A. necessarily
B. simply
C. essentially
D. purposefully
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