网与网的搭接长度不小于()mm。
A、30
B、50
C、80
参考答案:B
____ he had not hurt his leg, John would have won the race.
A.If
B.Since
C.Though
D.When
管理相对人严重违反治安管理,公安机关就可以依法吊销其发放的许可证。( )