伊马替尼单药治疗慢性粒细胞白血病的血液学完全缓解率是()。 ["54%","10%","98%","53%","88%"]
某工程需要水泥1000t。甲厂供应400t,原价270元;乙厂供应400t,原价280元/t;丙厂供应200t,原价290元/t。该工程所用水泥的原价应为()。 ["280","278","270","290"]
刚性防水屋面适用于() ["A、Ⅱ级防水屋面","B、大跨度屋盖的建筑屋面","C、Ⅲ级防水屋面","D、松散保温层屋面"]
烟草打顶的方法按迟早来分通常有()种。 ["A、2","B、1","C、3","D、4"]
抹灰层一般分底层、中层、面层,其中底层主要起()作用。 ["与基体粘结牢固","找平","使表面光滑细致","增加强度"]
如何证明炭粉中混有少量的氧化铜?