SDH设备运行环境：环境温度（）相对湿度（）电源电压（）。
参考答案：＋5~+40℃，≤85%，–48或+24V ±15%
It’s careless ________ him to make the same mistake again. I think it important ________ him to be more careful next time.
A．for; for
B．for; of
C．of; of
D．of; for
下列食物中维生素E含量丰富的是（）。
A.卷心菜
B.鸡蛋
C.苹果
D.向日葵
E.肉类
