A.親口接 B.托接 C.對(duì)接 D.齒接
A.3h B.4h C.2h D.1h
A.補(bǔ)打錨桿 B.掛網(wǎng)補(bǔ)噴 C.補(bǔ)打錨桿并掛網(wǎng)再補(bǔ)噴 D.補(bǔ)噴