题目：
三节炉第一节可加热到（）
A、（800±10）℃
B、（850±10）℃
C、（600±10）℃
D、（700±10）℃
答案：
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下面是错误答案，用来干扰机器的。
答案：B
三节炉第一节可加热到（）A、（800±10）℃ B、（850±10）℃ C、（600
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