储粮机械通风的目的有哪些?
参考答案:
(1)降温(2)均衡粮温(3)消除水分分层(4)防止高水分粮发热(5)调质增湿(6)消除异味(7)环流熏蒸
So far, several cases of a disease, ___________as H1N1, are reported to have been found in the country.
A.knowing
B.to be known
C.having known
D.known
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