单项选择题
A.8% B.6.5% C.5.5% D.7%
A.i≥0.05% B.i≥0.1% C.i≥0.2% D.i≥0.3%
A.200m B.100m C.50m D.150m
A.超车视距 B.停车视距 C.会车视距 D.错车视距
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