单项选择题
A.120km/hB.140km/hC.160km/hD.200km/h
A.10~14mmB.12~16mmC.14~18mmD.16~20mm
A.10%B.20%C.30%D.40%
A.140km/hB.160km/hC.200km/hD.250km/h
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