树木的（）是识别树木种类的重要依据。

A. looking at the gage
B. checking the nameplate data
C. weighing by hand
D. weighing on a properly calibrated scale

A. 资产评估职业道德准则
B. 资产评估基本准则
C. 资产评估具体准则
D. 资产评估指南
E. 资产评估指导意见