在财务会计中,销售费用的正确归属是() ["制造费用","主要成本","加工成本","非制造成本"]
按舒张压水平分级,Ⅲ级高血压是指舒张压() ["≥105mmHg","≥110mmHg","≥115mmHg","≥20mmHg"]
电子式电能表比机械式的电能表() ["精确度低","精度高","灵敏度低"]
统筹城乡发展的实质是()。 ["实现农业产业化","促进城乡二元经济结构的转变","增加农民收入","实现地区共同发展"]
现象学研究法常用的抽样方法是() ["量表","访谈法","问卷调查法","结构式观察法","生物医学测量法"]
简述债券价格变动与市场利率变动的关系。