【单选题】The number of foreign students attending Chinese universities ______ rising steadily since 1990.
【简答题】已知 s(x)=1-x/100 , 0 , 新生儿在 35 岁之前死亡的概率是 。(保留2位小数)
【简答题】已知 s(x)=1-x/100 , 0 , 新生儿在23 岁还活着的概率是 。(保留2位小数)
【单选题】已知一个样本的方差为s 2 = 1 100 [(x 1 -24) 2 +(x 2 -24) 2 +…+(x 100 -24) 2 ],若这个样本的容量为n,平均数为μ,则n-2μ=( )
【简答题】已知线性规划问题: min f=5x1 - 5x2 - 13x3 s.t - x1 + x2 + 3x3 ≤ 20 12x1 + 4x2+10x3 ≤ 100 x1, x2, x3 ≥ 0 将问题化为标准型之后求解,最优值为-100,最终单纯形表如下表所示 迭代 基变量 C B x1 x2 x3 x4 x5 b -5 5 13 0 0 x2 5 -1 1 3 1 0 20 2 x5 0 ...
【单选题】The minimum number and capacity of bilge pumps and fire pumps and their distributing within the ship is governed by _____.
A.
Classification Society Rules
C.
The IMO International Convention for the Safety of Life at Sea
【简答题】已知s(x)=1-x/100,0 30 岁的人,在 40 岁之前死亡的概率 。(保留2位小数)
【单选题】People _________ rivers for transportation since the beginning of history.