在一定压力下，气体在水中溶解度随温度升高而降低，因此，升温对脱硫不利。
参考答案：错
When Alice came to life, she did not know how long she ________ there.[ ]
A. had been lying
B. has been lying
C. was lying
D. has lain
下列中断中，______不属于强迫性中断。
A．设备出错
B．掉电
C．时间片到时
D．执行print语句
