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【单选题】
This is a kind of effective classroom teaching ______ students learn independently and cooperatively.A.
where
B.
which
C.
what
D.
when
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举一反三
【简答题】There are many thoughts on the origins of civilization. One of the major factors involved was the increase in population. The development of techniques, primarily irrigation and flood control, which p...
【单选题】某反应A + 2B = C,已知298 K时的标准摩尔反应焓Δ r H$ m(298 K) = 80.14 J·mol -1 ,Δ r C p, m = 0,1000 K时的Δ r H$ m(1000 K)为( )。
A.
Δ r H$ m(1000 K) > Δ r H$ m(298 K)
B.
Δ r H$ m(1000 K) < Δ r H$ m(298 K)
C.
Δ r H$ m(1000 K) = Δ r H$ m(298 K)
D.
Δ r H$ m(1000 K) =0
【简答题】阅读理解. There are many thoughts on the origins of civilization. One of the major factors involved was the increase in population. The development of techniques, primarily irrigation and flood control, w...
【简答题】“K&R”标准指的是什么?
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