湿热扩散
参考答案：
水分在粮堆内沿着由温度梯度引起的蒸气压梯度而移动的现象。
I wanted to buy a comic book like yours but there were ______ left at the bookshop.
A．no one
B．nothing
C．anyone
D．none
速效抑菌药与慢效抑菌药合用的效果是()
A．无关
B．相加
C．相减
D．增强
E．拮抗
