针对不同区域，相同行业同类生态效率之间通常存在（）关系 For different regions, the same type of eco-efficiency of the same industrial sector usually shows that（）A．数值大致相同 Their values are roughly the sameB．数值各不相同 Their values are greatly differentC．数值难以估算 Their values are difficult to be estimatedD．数值毫无管理用途 Their value is useless in management
针对不同区域，相同行业同类生态效率之间通常存在（）关系 For different regions, the same type of eco-efficiency of the same industrial sector usually shows that（）
A．数值大致相同 Their values are roughly the same
B．数值各不相同 Their values are greatly different
C．数值难以估算 Their values are difficult to be estimated
D．数值毫无管理用途 Their value is useless in management
参考答案和解析
ABCD
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