The system blocks calls when ______.
查看答案
Besides the way of threading an ultra thin wire with blood-flow sensors, another noninvasive way of detecting micro-vascular disease is to use______.
The speaker believed the reporter wanted a picture of her looking
针式打印机的打印速度用CPS来衡量,其含义为每秒钟打印的字符数。激光打印机和喷墨打印机都是一种页式打印机,它们的速度用【 】来衡量,其含义为每分钟可打印的页数。