A.機(jī)械錨固和摩擦錨固 B.端部錨固和全長(zhǎng)錨固 C.機(jī)械錨固和粘結(jié)錨固 D.粘結(jié)錨固和摩擦錨固
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