I hope that it is possible to achieve this objective by calling on the smokers ________ good judgment and show concern for others rather than by regulation.
D
暂无解析
设c为正向圆周|z|=2，则
已知常数k≥ln2-1，证明：(x1)(x-lnx²+2klnx-1)≥0。
超文本的含义是
下列积分计算正确的是()．
设有3个元件并联，已知每个元件正常工作的概率为P，则该系统正常工作的概率为
