A.經(jīng)濟(jì)周期是總體經(jīng)濟(jì)活動 
B.經(jīng)濟(jì)周期是個別部門或個別經(jīng)濟(jì)總量指標(biāo) 
C.經(jīng)濟(jì)周期是指總體經(jīng)濟(jì)活動沿著經(jīng)濟(jì)增長的總體趨勢而出現(xiàn)的有規(guī)律的擴(kuò)張和收縮 
D.經(jīng)濟(jì)周期按波動的時間長短可以分為古典型周期和增長型周期 
E.經(jīng)濟(jì)周期需要通過一組經(jīng)濟(jì)總量指標(biāo)，包括GDP、就業(yè)和金融市場指標(biāo)等才能說明經(jīng)濟(jì)周期