电源故障一般是由于()、电源线路老化和雷击等原因引起的。
A、交换机重启
B、外部供电不稳定
C、计算机病毒
D、数据流量大
参考答案:B
根据内容提示完成句子。
1. He offered _________ _____ poor black people on their legal problems.
2. The last thirty years have seen the greatest number of laws stopping our ______ _____ _____,
until today we have reached _____ ______ ______ we have almost no rights at all.
3. At 3:42 am everything began to shake. It seemed as if the world was ___ ___ ____.
4. Thousands of families were killed and many children were left _______ _____.
5.The army organized teams to dig out those who were trapped and to____ ___ ____.
下列选项中对我国毒品消费形势表述正确的是()
A.毒品消费者市场逐步减少
B.35岁以下青少年吸毒人数约比高
C.吸食合成毒品的人数下降
D.吸毒人数减少