单项选择题
A.n1B.vn1C.n1/v
A.96.2KWB.102.6KWC.106.8KWD.112.2KW
A.n=20f/pB.n=30f/pC.n=60f/pD.n=80f/p
A.9358.55WB.9458.33WC.9758.55WD.9813.66W
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