食品运输过程中,通常用干冰或冰块来保鲜.请分别说出这两种方法的物理依据 答案:解:干冰易升华,由固态直接变为气态,在升华过程中需要从外界吸收大量的热,会使食品温度降低,起到防止腐烂变质的作用;冰块熔化时,由固态变为液态,在熔化过程中需要从外界吸收大量的热,会使食品温度降低,起到防止腐烂变质的作用--Would you like to come to dinner this Sunday, Xiao Ming?
--________.
[ ]
A.I'd love to,
but I have lots of things to do
B.Oh, no.
That'll be too tired
C.I'll stay at home
D.Yes, please