B: Aluminum is an active metal, which easily reacts with oxygen to form a dense oxide film on its surface. However, alumina is amphoteric, and the oxide film is destroyed in the process of pickling pickles, and aluminum ions enter the human body with pickles, which affects human health. Aluminum containers can't be used to pickle pickles, so B is correct;

C. Dispersion system belongs to mixture, and common dispersion systems include solution, colloid, suspension, etc. , in line with the inclusion relationship, so C is correct;

D: Single atom manipulation with STM mainly includes three parts, namely, single atom movement, extraction and placement;