A:双氧水、高锰酸钾溶液可以完全灭活埃博拉病毒,其消毒原理与漂白粉消毒饮用水的原理相同
B:不法商家制取的“地沟油”具有固定的熔沸点
C:食品保鲜膜按材质可分为聚乙烯(PE)、聚氯乙烯(PVC)等,PVC的单体可由PE的单体与氯化氢加成制得
D:乙醇用作医用消毒剂时,无水乙醇消毒效果最好
下面对强压的理解正确的是( )
欧仁·鲍狄埃的《国际歌》唱遍了全世界,他的创作灵感直接来源于( )
A: ____
B:Yes. These shoes are very nice. ____
A: ____ Here you are. Are they OK?
B:They're too small.
A:Hmm. OK. ____
B:Let me try. ____
A:Good!
A. How about size 8?
B. They're just right.
C. Can I help you?
D. Of course.
E. Can I try them on?