单项选择题
A.1700 B.1500 C.1800 D.1200
A.25 B.35 C.45 D.55
A.9.5~10.5 B.7.5~9.5 C.6.5~8.5 D.10.5~11.5
A.60kW B.90kW C.110kW D.130kW
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