把在临界温度下，气体转变成液体时所需的最小压力称为临界压力。（）
参考答案：对
He had his camera ready ________ he saw something that would make a good picture.
A．even if
B．soon after
C．in case
D．so that
将软盘或存储卡上的内容复制到电脑中，称为（）
A.拷贝
B.写盘
C.读盘
D.输出
