So far a total of 19 cases______ and another 36 people are being treated on the assumption that they are infected with Legionnaires Disease.

A．were confirmed

B．have confirmed

C．are confirmed

D．have been confirmed

按运用情景的不同，胜任特征可以分为（）。

A.技术胜任特征

B.组织胜任特征

C.人际胜任特征

D.概念胜任特征

E.特殊技术胜任特征