【单选题】Dad ______ from his paper and smiled when I entered the living room. [ ]
【单选题】玻璃幕墙中铝合金型材硬度的检验,应采用韦氏硬度计测其表面硬度。型材表面的涂层应清除干净,测点不应少于( )个,并应以至少3点的测量值取其( )。
【单选题】He _____ his sister at home because his parents went to Tongren. [ ]
【单选题】只要降低(FeO),则[O]也相应降低,这称为( )脱氧。
【单选题】某抗原需制备10ml抗血清,应选择何种动物
【单选题】某抗原需制备10mL抗血清,应选择何种动物
【单选题】He put his hands into his pockets and then shrugged his shoulders.
【判断题】船舶航行中,驾驶台内值班人员可以坐着值班。A. 对 B. 错
【单选题】STS 研究提出的目的是
C.
改变科学与技术分离,科学、技术和社会脱节的状态。