决策方案的后果有多种，每种都有客观概率，这属于（）
A.不确定型决策
B.非程序化决策
C.战术决策
D.风险型决策
参考答案：D
常用于不耐热的中药粉针剂干燥的方法是
A．鼓式干燥
B．减压干燥
C．冷冻干燥
D．喷雾干燥
E．沸腾干燥
When a fire ______ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.
A．broke off
B．broke out
C．broke down
D．broke up
