单项选择题
A.3%～5% B.5%～16% C.10%～20% D.20%～30%
A.0.1% B.0.2% C.0.5% D.1.5%
A.0.2m B.0.5m C.1.0m D.0.7m
A.55℃ B.65℃ C.75℃ D.70℃
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