—You don’t look well, what’s wrong with you, Wang Ming? —Last night I watched the football match and didn’t go to bed ______ 12 o’clock. ( )
A A. when B B. until C C. as D D. while
参考答案:
下列四项中不属于微型计算机主要性能指标的是______。
下列四项中不属于微型计算机主要性能指标的是______。A A. 字长B B. 主存容量C C. 重量D D. 时钟脉冲