加气混凝土是含()材料加水并加适量的发气剂和其他外加剂,经混合搅拌,经蒸压养护制成。 ["硅","锰","砂","水泥","尾矿粉"]
在行业竞争中,处于主导地位的企业采取垄断各种可行的技术专利的做法,这属()战略。 ["进攻","维持","袭击","收获"]
An OSPF link can be in multiple states at any given moment (ie. Exstart, exchange, full). Whichtwo IOS commands let you view the state of the link?() ["show ip ospf","show ip protocols","show ip ospf neighbor","show ip ospf interface"]
检测抗HCV最常用的检测方法是() ["酶联免疫吸附试验","间接免疫荧光试验","重组免疫印迹试验","放射免疫试验","间接血凝免疫试验"]
论述金属腐蚀的类型及保护方法。
成语“飞黄腾达”的结构方式是()。