问题
单项选择题
高炉冷却水压力比热风压力至少高（）
A、50MPa
B、50kPa
C、100MPa
D、100kPa
答案
参考答案：B
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高炉冷却水压力比热风压力至少高（）
A、50MPa
B、50kPa
C、100MPa
D、100kPa
参考答案：B
| 读一读，补全短文。 | |
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