具有杀菌作用的紫外线波长是().
A.50~90nm
B.100~140nm
C.150~190nm
D.200~300nm
E.400~490nm
参考答案:D
The police finally caught up with the man ______ was the escaped prisoner.
A.who they thought
B.whom they thought
C.they thought him
D.that they thought him
妨害( )的行为是指危害不特定多数人的人身和财产安全,尚不够刑事处罚的行为.
A.公共秩序
B.公共安全
C.社会管理
D.人身权利