如图为某物质的温度随时间的变化曲线,这是它的 图象,从图中看出该物质的熔点为 ,固液共存的时间是 ,放热的时间是 .
凝固;32℃;15min;30min
The girl __________ to me that she had __________ the book on the shelf.
A.lay; laid
B.lied; lain
C.lied; laid
D.lied; lay
说明晶体成长形状与温度梯度的关系