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【简答题】
文书立卷的归档制度包括三方面:归档范围、_____________和归档要求。
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【单选题】This technique is traditionally thought to be of Chinese ______.
A.
origin
B.
source
C.
civilization
【简答题】凸轮轴是气门传动组中最重要的零件,用来驱动和控制各缸气门的____,使其符合发动机的工作次序、配气相位及气门开度的变化等要求。
【简答题】浆果类的组织结构特征是（）且（）。
【简答题】组织液生成的有效率过压是由哪些因素构成的?各有何作用?
【单选题】If this technique should be extended to other crop plants, the rate of production in this area.
A.
will be greatly improved
B.
is greatly improved
C.
would have been greatly improved
D.
would be greatly improved
【单选题】The ________ of this technique is that the files can only be read online.
A.
disadvantage
B.
disagreement
C.
advantage
D.
distinction
【简答题】组织液生成的有效率过压是由哪些因素构成的?各有何作用?
【单选题】This technique is now believed as early as the Song Dynasty.
A.
being used
B.
to be used
C.
to used
D.
t o have been used
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