煮沸消毒所需时间应从：（）
D
暂无解析
区分不变资本与可变资本的意义有（）
They knew they had to________action to deal with the plague before it spread to other areas.
商品生产过程中创造商品价值的劳动是()
货币转化为资本的决定性条件是（）
Can you tell us more ___ (precise)what happened last night?
