【简答题】塑料作为最常用的直接接触药品的包装材料,具有___、___、___等优点,但也具有___、___、___的缺点。
【多选题】塑料是现在包装工业中常用的包装材料,下列关于塑料的说法正确的是( )。
B.
具有包装牢固、容易封口、色泽鲜艳、透明美观、重量轻、携带方便、价格低廉等优点。
C.
塑料中的附加剂可与药品发生发生化学反应,以致药品质量发生变化。
【单选题】Only when you have obtained sufficient data _______ come to a sound conclusion. A. can you B. you can C. would you D. you would
【单选题】— Would you have told him the answer had it been possible? . — I would have, but I _____ so busy then. [ ]
【判断题】聚苯乙烯特点是无毒,没有增塑剂的污染及溢出,可制成薄膜、瓶、盖及用薄膜扁丝编成包装袋,常用于食品、药品包装以及制成各种外装包装,集装袋等大型袋也用聚丙烯材料为基本材料。( )
【单选题】Only when you have finished your homework _____ go home. [ ]
【单选题】What ______ if the weather had been fine yesterday?