单项选择题
A.-2ºC至-10ºC,-5ºC至-15ºC B.-2ºC至-12ºC,-8ºC至-15ºC C.-2ºC至-12ºC,-8ºC至-10ºC D.-2ºC至-12ºC,-5ºC至-15ºC
A.0至-10ºC B.0至-15ºC C.0至-20ºC D.0至-25ºC
A.I≤0.5,0.5<I≤1.0,I>1.0 B.I<0.5,0.5≤I≤1.0,I>1.0 C.I≤0.5,0.5≤I<1.0,I≥1.0 D.I<0.5,0.5≤I<1.0,I≥1.0