A.經(jīng)濟(jì)周期是總體經(jīng)濟(jì)活動(dòng)
B.經(jīng)濟(jì)周期是個(gè)別部門(mén)或個(gè)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(dòng)沿著經(jīng)濟(jì)增長(zhǎng)的總體趨勢(shì)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(dòng)的時(shí)間長(zhǎng)短可以分為古典型周期和增長(zhǎng)型周期
E.經(jīng)濟(jì)周期需要通過(guò)一組經(jīng)濟(jì)總量指標(biāo),包括GDP、就業(yè)和金融市場(chǎng)指標(biāo)等才能說(shuō)明經(jīng)濟(jì)周期