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【单选题】
为幻灯片添加动作按钮,可以使用()选项卡A.
开始
B.
插入
C.
幻灯片放映
D.
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反馈参考答案：
举一反三
【单选题】The difference between a permutation and a combination is:
A.
in a permutation order is important and in a combination order is not important.
B.
in a permutation order is not important and in a combination it is important.
C.
a combination is based on the classical definition of probability.
D.
a permutation is based on the classical definition of probability.
【单选题】The difference between a permutation and a combination is
A.
a combination is based on the classical definition of probability.
B.
in a permutation order is not important and in a combination it is important.
C.
in a permutation order is important and in a combination order is not important.
D.
a permutation is based on the classical definition of probability.
【简答题】从化学结构上看,糖类是()或(),或者()后可以生成多羟基醛或多羟基酮的化合物。
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