Atropine sulfate powder can be made into 1: 100 times powder for use. In order to ensure the uniformity of powder and easily distinguish common practical pigments such as carmine and indigo. Because the dosage of atropine sulfate is small, the same amount of gradual mixing should be adopted. Atropine sulfate powder is generally divided into doses by weight method. When two or more drugs are mixed, wetting or liquefaction sometimes occurs. This kind of powder is made into low melting point first, and then mixed with other solid powders, but it is not used for atropine sulfate powder, so item D is wrong. So the answer to 90 questions is D.