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【简答题】
塑料大约需要多久时间在自然界中分解?
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反馈参考答案：
举一反三
【简答题】中最优化生产技术OPT强调的是________的优化。最优化生产技术OPT强调的是________的优化。
【简答题】STAR原则?
【单选题】Which of the following is a basic objective of a speech introduction?
A.
reinforce the central idea
B.
preview the main points
C.
gain the attention o f the audience
D.
all of the above
E.
b and c only
【单选题】The author's main criticism of John kott is that he ______.
A.
advocates private ownership of firearms
B.
is not objective in his analysis
C.
has analyzed a wrong period
D.
has cited dubious statistics
【单选题】The author's main criticism of John Lott is that he ______.
A.
advocates private ownership of firearms
B.
is not objective in his analysis
C.
has analyzed a wrong period
D.
has cited dubious statistics
【单选题】The author's main criticism of john Lott is that he ______.
A.
advocates private ownership of firearms
B.
is not objective in his analysis.
C.
has analyzed a wrong period
D.
has cited dubious statistics
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