【单选题】The disadvantage of a process being allocated all its resources before beginning its execution is ___________
B.
Low resource utilization
C.
Very high resource utilization
【单选题】战场上士兵穿迷彩服,是利用注意的( )规律。
【单选题】凸轮机构中,从动件构造最简单的是( )从动件
【判断题】天然状态下土经开挖后,其体积因松散而增加,以后虽然经回填夯实也不能恢复到原来的体积,土的这种性质称为土的可松性。