【多选题】下列关于盖度的说法正确的是( )。
A.
当按层或种来测定盖度时,总有分盖度之和(累积盖度)≥总盖度。
C.
对于森林群落,则以树木胸高( 1.3m 处)断面积计算 基盖度
D.
相对盖度 是某种植物的盖度占盖度最高的植物的盖度之比
【单选题】湿温病湿热化燥入血,伤络便血证的主症是:
【简答题】Consider the following statements, made by the same man eight years apart. "ually, being &39;poor&39; won&39;t be as much a matter of living in a poor country as it will be a matter of having poo...
【单选题】网络安全的特征包含保密性、完整性、( )4个方面
【简答题】The following, apart from one statement, are measures for encouraging upward communication in anorganisation. Which is the incorrect statement?A. Suggestion schemes B. Management by Walking Around C. ...