单项选择题
A.0.6-0.8B.0.9-0.11C.0.7-0.9D.0.11-0.13
A.2-3B.1-2C.5-10D.20-25
A.高压B.中压C.低压D.以上都对
A.80°~100°B.100°~110°C.120°~130°D.130°~140°
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