单项选择题
A.1000℃ B.1100℃ C.1200℃ D.1300℃
A.1.5 B.2~5 C.3.5~6 D.6.5
A.2.5 B.2 C.1.5 D.1.2~1.3
A.0.1 B.0.15 C.0.25~0.65 D.0.65
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