对多幅相机工作原理的论述,错误的是:() ["阴极射线管把视频信号变为图像信号","图像信号在视频监视器屏幕上显示","屏幕上的图像经透镜系统聚焦在胶片上曝光","多幅图像经一次曝光可全部完成","多幅相机的监视器与主机监视器同步"]
细胞内线粒体的数目改变与何种因素有关() ["数目恒定","不同的生理条件下","不同种类的细胞","相同种类的细胞","病理条件下"]
微商用的最多的头像是哪种?() ["A、产品头像","B、个人头像","C、品牌头像","D、团队头像"]
含有DNA的细胞器是() ["细胞核","核糖体","线粒体","高尔基复合体","内质网"]
过河红军被命令正式组建为“西路军”时,红军总部及直属部队到达()。 ["靖远吴家川","景泰一条山","古浪干城","古浪大靖"]
试述阻力系数法计算闸基渗流的基本原理?