凝胶法的优点
1919~1949年新中国成立以前,中国社会的最主要矛盾是() ["农民阶级和地主阶级的矛盾","资产阶级和无产阶级的矛盾","中国人民同外国帝国主义的矛盾","中国人民同本国封建主义的矛盾"]
在两个核小体之间起连接作用的组蛋白是() ["H1","H2A","H2B","H3","H4"]
核膜与下面哪种膜性结构密切相关() ["高尔基复合体膜","线粒体膜","内质网膜","核糖体膜","溶酶体膜"]
颞骨高分辨率CT重建后的图像主要特点:() ["影像层次多","显示野变大","信噪比低","边缘锐利","密度分辨率高"]
电解溶剂法和溶剂蒸发法的异同