根据《中国居民膳食指南》,每日动物性食品的摄取量应为( )
预防群体思维的建议可以是( )。
Cambridge University Press, a department of the university, is the world's oldest publishing house and the second-largest university press in the world.
Generally speaking, in an abstract, the opening and concluding statements are written in the present tense or the present perfect tense, while the methods and results are expressed in the past tense.
股骨粗隆间骨折是指股骨颈基底至大转子水平部位的骨折( )