减少食品中水分活度时,首先是抑制(),其次是(),然后才是()。
参考答案:腐败性细菌;酵母菌;霉菌
连词成句。
1. teacher's is this office the (.)
2. lunch school at you have do (?)
3. for it's school time (.)
4. my is where dress (?)
5. so it's beautiful (.)
当玻璃棒与丝绸摩擦后,玻璃棒因失去电子而带________电,丝绸得到电子带等量的________电。