城镇体系规划土地利用规划、环境保护规划属于我国规划体系中的( )。
A．区域规划B．行业规划C．专项规划D．综合规划
参考答案：C
He a glass of milk just now. He was very careless. [ ]
A. knocked at
B. knocked on
C. knocked out
D. knocked off
由于乙炔气瓶瓶阀的出气口处无螺纹，所以，减压器是靠专用的卡紧装置与瓶阀结合的。
