中性氧化气氛的含氧量在8%左右。
参考答案：错
Miss Smith is leaving to get married and Miss Jones will be _____ the class. [ ]
A. taking over
B. getting over
C. handing over
D. turning over
考虑到戒毒的特殊性，强制戒毒所不允许戒毒人员的家属或者所在单位的有关人员探访。 ( )
