关于机械能和内能，下列说法中正确的是[ ] A．机械能大的物体，其内能一定很大

Shangri-la, which is _______ happy home for the local people, is also ________ home to many birds and animals.

A．the; a

B．/; /

C．a; /

D．/; a

粪胆原阴性可见于

A．胆管癌
B．溶血性黄疸
C．胆道阻塞
D．胆道结石
E．肝细胞性黄疽

性偏好障碍包括（）

A.恋物症

B.露阴症

C.窥阴症

D.异装症

E.以上都对

As the city has become increasingly ______ and polluted, there has been a growing realization that certain action urgently needed.
A. flourished B. boosted C. congested D. mingled

按行业管理分，汽车维修企业可分为哪几类？它们有何不同？