A.Because she enjoys skiing.
B.Because she enjoys ice-skating.
C.Because she enjoys playing with snow.
D.Because she enjoys cold weather.
第1题
脱磷的化学反应式:2[P]+4(CaO)+5(FeO)=(4CaO·P2O5)+5[Fe],有利于脱磷的条件:___ 、___、高(FeO) 、___。
第6题
A.2[P]+5(FeO)+4(CaO)=(4CaO·P2O5)+5[Fe]△H=-227200卡
B. 2[P]+5(FeO)+4(CaO)=(4CaO·P2O5)+5[Fe]△H=227200卡
C. 2(P)+5[FeO]+4(CaO)=(4CaO·P2O5)+5[Fe]△H=-227200卡
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