A.自重大,穩(wěn)定 B.施工工序簡單 C.產(chǎn)生裂縫小或不產(chǎn)生裂縫 D.施工周期短
A.涂粘度計 B.秒表 C.水銀溫度計 D.攪油用棍棒
A.50mm B.75mm C.100mm D.125mm