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【单选题】
预报早产的指标是A.
卵磷脂
B.
薄层
C.
胎儿纤维连接素
D.
纤维蛋白降解产物
E.
纤维蛋白原
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举一反三
【简答题】功似龙骨而长于软坚散结的药物是（ ）
【简答题】Alkanes undergo reactions such as cracking, alkylation, oxidation, halogenation, nitration and so on.
【多选题】What does commission mean?
A.
It's a reward given to an agent.
B.
It's based on the percentage of the sale.
C.
It's in proportion to the price at which the goods are bought or sold.
D.
It is paid to a salesperson for every sale that he or she makes.
【简答题】Alkanes undergo reactions such as cracking, alkylation, oxidation, halogenation, nitration and so on.
【单选题】What kind of information does the man read about?
A.
A discount on computer monitors
B.
A sale on hard drives
C.
A new computer technology
D.
A job opening at a computer manufacturer
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