设立自然保护区最根本的目的是为了().
A.保护野生动植物
B.发展农牧业生产
C.供人狩猎
D.发展旅游事业
参考答案:A
工程造价信息的特点包括()。
A.稳定性
B.多样性
C.系统性
D.区域性
E.综合实用性
Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?()
A.Insure the chemical is powdery
B.Replace the cartridge
C.Pressure test the discharge hose
D.Test the pressure gauge for proper operation