可作为栓剂制备用基质的是()
A.聚乙二醇
B.液状石蜡
C.凡士林
D.甘油
E.羊毛脂
参考答案:A
286. In 1920 Poland and Russia were still at _______and they mustn’t trade in agricultural products with each other.
A.battle
B.campaign
C.struggle
D.War
目标设定要根据目标的重要性确定不同的()。
A.比重
B.权重
C.范围
D.性质