男性，40岁，肠道手术后单纯应用中链三酰甘油超过1周以上，应注意补充（）。 ["糖类","支链氨基酸","必需氨基酸","优质蛋白质","长链脂肪酸"]
酸值是挥发油中的（） ["酸值加皂化值","皂化值减酸值","酸值减皂化值","羧酸和酚类成分总和","酸值与酯值之和"]
题3图所示电路中的电压U1应为（）V。 ["2.5","20","50","22.5"]
皂化值是挥发油中的（） ["A.酸值加皂化值","B.皂化值减酸值","C.酸值减皂化值","D.羧酸和酚类成分总和","E.酸值与酯值之和"]
慢性胃炎的膳食治疗原则是（） ["多量多餐","多量少餐","少量少餐","少量多餐","少量饮酒"]
技术贸易
