定金应当以书面形式约定，定金合同从实际交付定金之日起生效。
A、正确
B、错误
参考答案：A
The famous actress became________, and couldn't say a word when asked about her father,
who passed away only last month. [ ]
A. choked
B. frightened
C. swelled
D. squeezed
浓碱冷却泵的扬程（）米，所配用的电机功率为（）千瓦。
