【多选题】美国管理学家菲德勒认为,()是决定领导有效性的主要环境因素。
【多选题】美国管理学家菲德勒认为,( )是决定领导有效性的主要环境因素。
【单选题】计算机网络发展至今,已历四代。请问:按照分层的方法设计计算机网络系统是第( )代计算机网络的特点。
【单选题】The study of trees, branches and roots shows that __________.
A.
there were larger amounts of gold in the branches than in the seeds
B.
there were smaller amounts of gold in the roots than in the branches
C.
there were less amounts of gold in the seeds growing on the ends of branches than seeds growing nearest to the tree trunks
D.
there was more gold in the branches than in the roots
【多选题】美国管理学家菲德勒认为,( )是决定领导有效性的主要环境因素。
【多选题】美国管理学家菲德勒认为,()是决定领导有效性的主要环境因素。
【单选题】第一代计算机网络系统即主机系统采用的通信方式是( )。