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【单选题】
制备口服缓控释制剂可采取的方法不包括A.
制成微囊
B.
用蜡类为基质做成溶蚀性骨架片
C.
用PEG类作基质制备固体分散体
D.
用不溶性材料作骨架制备片剂
E.
用EC包衣制成微丸,装入胶囊
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举一反三
【单选题】His failure was due to he had never taken his study seriously.
A.
that
B.
the fact
C.
why
D.
the fact that
【单选题】The boy‘s failure was due to continued ( ) his studies.
A.
disregard
B.
regarded of
C.
disregard of
D.
disregard to
【单选题】His failure was due to ________ he had never taken his study seriously.
A.
that
B.
that fact
C.
why
D.
the fact that
【单选题】最优二叉树(或哈夫曼树)是指权值为 W1， W2，。。。，Wn 的 n 个叶结点的二叉树中带权路径长度最小的二叉树。（ ）是哈夫曼树(叶结点中的数字为其权值)。
A.
B.
C.
D.
【简答题】多油断路器中油的作用是什么？
【单选题】His failure was due to ( ) he had never taken his study seriously.
A.
that
B.
the fact of
C.
why
D.
the fact that
【单选题】His failure in business was due not so much to ___________ as to his own mistakes.
A.
misfortune
B.
misunderstanding
C.
fortune
D.
wealth
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