A.膠原和網(wǎng)狀纖維 B.軟骨 C.黏液和淀粉樣物質(zhì) D.髓鞘和紅細(xì)胞 E.神經(jīng)膠質(zhì)纖維和肌纖維
A.出發(fā)點(diǎn)B.維持點(diǎn)C.立足點(diǎn)D.基礎(chǔ)點(diǎn)
A.干拌砂漿B.砂漿C.砂石D.混合砂漿