住宅小区物业管理的动态管理指的就是状态化管理。()
参考答案:错
—Who helped Betty tidy up the bedroom just now?
—_________. She cleaned it all by herself.
A.Somebody
B.Nobody
C.Everybody
D.Anybody
下列哪种偏倚属于选择偏倚()。
A.奈曼偏倚
B.回忆偏倚
C.检出征候偏倚
D.暴露怀疑偏倚
E.就诊机会偏倚