急性胰腺炎的恢复期病情稳定后,可经口进食,应选用()。 ["高蛋白饮食","普食","无脂高糖类流质","要素膳食","低糖类、高蛋白半流质饮食"]
中链三酰甘油的脂肪酸碳原子数为()。 ["6~8","6~12","12~16","18~22","23~26"]
已知在一定温度下 SO3(g)SO2(g)+O2,K1=0.050 NO2(g)NO(g)+O2,K2=0.012 则在相同条件下 SO2(g)+NO2(g)SO3(g)+NO(g) 反应的平衡常数K为:() ["0.038","4.2","0.026","0.24"]
能够防止氧化热解,提高挥发油品质而且提取效率高的方法是() ["A.压榨法","B.溶剂提取法","C.水蒸气蒸馏法","D.CO2<\/sub>超临界流体萃取法","E.盐析法"]
题5图所示电路中获得最大功率及负载电阻RL应分别为()。 ["25/3W,3Ω","25W,4Ω","3W,3Ω","25/3W,4Ω"]
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