马斯洛认为最低层次的需求是()
参考答案：生理需要
One of the requirements for a fire is that the material ____ to its burning temperature.[ ]
A. is heated
B. will be heated
C. be heated
D. would be heated
光固化复合树脂
A．固化时收缩B．固化期15分钟C．固化期轻膨胀D．与牙齿有化学结合E．固化时体积无变化
