我国城市规划法律体系的核心是( )。
A.《城市规划编制法》
B.《土地管理法》
C.《城市规划法》
D.《城市房地产法》
参考答案:C
空气净化技术中,下列哪种粒径的粒子作为划分洁净等级的标准粒子()
A.0.5μm
B.0.5μm和5μm
C.0.3μm
D.0.22μm
E.0.3μm和0.22μm
Robert Frost described () as "a book of people", which shows a brilliant insight into New England character and the background that formed it.
A. North of Boston
B. A Boy’s Will
C. A Witness Tree
D. A Further Range