【判断题】硅酸盐水泥熟料的矿物成分中,对强度贡献最大的是C 3 A。( )
【判断题】Cervantes is recognized as the father of the modern European novel and has had great impact on world literature. His masterpiece Don Quixote was a parody satirizing a very popular type of literature a...
【判断题】硅酸盐水泥熟料的矿物成分中,对强度贡献最大的是C 3 S。( )
【判断题】水泥四种矿物成分中,C2S发热量最大,生产中热硅酸盐水泥时,要加以限量。()
【单选题】按伺服系统的控制方式分类,数控机床的步进在测量过程中,不会有累积误差,电源切断后信息不会丢失的检测元件是()。
【判断题】These days, more people are concerned about the impact companies have on the world we live in.
【单选题】His return from abroad will have great impact on the political world.
【判断题】The large number of failures among EC companies in recent years provides proof that electronic commerce is a passing fad which will have little long-term impact on world business.