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【单选题】
好氧堆肥的三阶段中,有关降温腐熟阶段的描述以下不正确的是:A.
随着生物可利用的有机物逐步耗尽，微生物进入内源呼吸阶段。
B.
堆内温度下降，中温菌再度占优势，使残留的难降解有机物进一步分解。
C.
这一阶段，腐殖质形成并趋于稳定，进入腐熟阶段。
D.
以上描述均不正确
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A.
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C.
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i f
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A.
to me
B.
had written to
C.
him
D.
for buying
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A.
buying
B.
being bought
C.
were bought
D.
bought
【单选题】i s no po ss i b ili t y B ob c a n w i n t he f i r s t p r i z e i n t he m a t c h. A . T h e r e ; t h a t B . I t ; t h a t C . t h e r e ; w h e t h e r D . I t ; w h e t h e r
A.
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C.
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【简答题】Directions: For this part, you are allowed 30 minutes to write a short essay entitled Buying and Selling Stocks as a Student. You should write at least 150 words following the outline given below: 1. ...
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