肾后性肾衰竭的原因()
A.休克
B.双侧输尿管结石
C.X线造影剂
D.转移性肝癌
E.骨盆骨折
参考答案:B
下列不属于里克特提出的管理方式的是()
A.专制-权威式
B.开明-权威式
C.群体参与式
D.权变领导式
Though there is no one in the hall, he stands on the stage as if he ____watched and expected to deliver a speech.
A.has been
B.had been
C.were being
D.is being