单项选择题
A.60m～80m B.70m～90m C.70m～100m D.80m～100m
A.30min B.60min C.120min D.180min
A.－5℃～＋30℃ B.－1℃～＋35℃ C.－5℃～＋40℃ D.－5℃～＋45℃
A.≤2A B.≤3A C.≤5.6A D.≤6A
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