A.在經(jīng)歷六個(gè)生物半減期后，趨于降低
B.在經(jīng)歷六個(gè)生物半減期后，趨于穩(wěn)定
C.只要暴露期足夠長(zhǎng)，就會(huì)達(dá)到對(duì)機(jī)體產(chǎn)生有害效益的水平
D.只要生物半減期足夠長(zhǎng)，就會(huì)達(dá)到對(duì)機(jī)體產(chǎn)生有害效應(yīng)的水平
E.只要暴露頻度低，就會(huì)達(dá)到對(duì)機(jī)體產(chǎn)生有害效應(yīng)的水平