【单选题】In many cultures people who were thought to have the ability to ______ dreams were likely to be highly respected.
【简答题】下列说法正确的是 A.PCl 5 中所有的原子都满足最外层8电子结构 B.同素异形体之间的转化属于物理变化 C.质子数相等,电子数也相等的良种微粒可能是不同的离子 D.CaF 2 和Na 2 O 2 的化学键和晶体类型均相同
【单选题】In many cultures people who were thought to have the ability to ______ dreams were likely to be highly respected.
【多选题】根据工作原理不同,常见的RFID标签分为( )不同的电子标签。