The inapplicability of automatic tracking and positioning injection system includes ().

The automatic tracking and positioning jet fire extinguishing system is not suitable for the following places: (1) There are often open flame operations. (2) Not suitable for water protection. Calcium carbide reacts with water, and C is not applicable. (3) There is obvious occlusion. (4) The fire level spread quickly. (5) For the shelf area of an elevated warehouse, A is not applicable. (6) The fire risk level is the serious risk level specified by the automatic sprinkler system. The studio belongs to serious danger level II, and B is not applicable.