【单选题】列各项中,关于钢筋连接的基本规定不正确的说法是( )。
A.
钢筋的连接可分为绑扎连接、焊接和机械连接三种
B.
在任何情况下,纵向受拉钢筋绑扎搭接接头的搭设长度不应小于300mm,纵向受压钢筋的搭接长度不应小于200mm
C.
钢筋机械连接有钢筋套筒挤压连接、钢筋锥螺纹套筒连接、钢筋镦粗直螺纹套筒连接、钢筋滚压直螺纹套筒连接
D.
当受拉钢筋的直径d>22mm及受压钢筋的直径d>25mm时,不宜采用绑扎搭接接头
【单选题】关于细菌L型变异的描述,错误的是
E.
能够破坏肽聚糖结构或抑制其合成的物质都能使细菌形成L型
【单选题】– Would you mind staying in such a noisy room? – No, but my son need a ______________ place to study in.
【判断题】世界上唯一规定器官买卖合法的国家是伊拉克。
【单选题】How can you play football in such a crowded street? I think you need a _______ place.
【单选题】听力原文: Have you ever tried beansprouts in a Chinese restaurant? All you need to grow these from the beans are a jar, a thin piece of cloth, a little water and a warm, dark place in the house. This is h...
【单选题】关于细菌L型,下列哪一项是错误的
C.
凡能破坏肽聚糖结构或抑制其合成的物质都能损伤细菌细胞壁而形成细菌L型
D.
细菌L型是细菌失去细胞壁所形成的细胞壁缺陷型
【判断题】前牙PFM修复治疗时,为了保证美观,修复体唇舌面都要求烤瓷覆盖
【单选题】If you need a transfusion, the best and safest blood for you is______.
B.
exactly the same type as yours
C.
a mixture of salt, plasma and type O