34.Actually, personalities are__________ than this. A: complex B: complexing C: more complex D: more complexly

【单选题】在注射剂中加入焦亚硫酸钠作为( ) A: complexing agent B: preservatives C: antioxidant D: anodyne E: suspending agent

Point out the erroneous conclusions in the following statements ( ) A: The acid effect of complexing agent reduces the stability of complex B: The hydrolytic effect of metal ions reduces the stability of the complex C: The auxiliary complexation effect reduces the stability of the complex D: All kinds of side reactions are not conducive to the occurrence of the main reaction of complexometric titration