在证券经纪业务中，经纪商与客户之间代理委托关系的建立，表现为开户和委托两个环节。( )
参考答案：对
根管最狭窄的地方在
A．约距根尖孔1mm处
B．约距根尖1mm处
C．约距根中1/3与根尖l/3交界处
D．约距根颈1/3与根尖1/3交界处
E．约在根管口处
Although she was superior______skills and leadership, she was dismissed _____her post for betraying the secrets to another company.
A．to; from
B．in; from
C．to; for
D．from; from
