如要长期保藏低酸性食品和酸性食品,通常分别采用什么温度杀菌?为什么?
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Why does Omarosa think that she is the punching bag (攻击目标) for this group?
Why did Amy say that she would like to work with men instead of women?
路堤填筑中分层填筑是指 ( )
A. 水平分层填筑
B. 纵向分层填筑
C. 以上两种都正确。
当地面横坡为1∶5~1∶ 2.5 时原地面应挖成台阶, 台阶宽度不小于 ( )
A. 2.0m
B. 0.5 m
C. 1.0m
D. 1.5m