NBA,CBA,TV,CIA,P.E.的全写形式

NBA
National Basketball Association
美国职业篮球联赛

CBA
chinese Basketball association
中国职业篮球联赛

TV
television的缩略
abbr
电视 (television)

CIA
abbr
（美国）中央情报局 (the Central Intelligence Agency of the U.S.)

P.E.
PE
abbr
体育课；体能训练 (physical education)

NBA=National Basketball Association
TV=television
CIA=Central Intelligence Agency
P.E.=physical education

National Basketball Association]
chinese Basketball Association]
television
Central Intelligence Agency
Physics

补充：NBA还有个常用的意思，“全美/英律师协会”，National Bar Association.