【简答题】The packing must be reinforced and strong enough to ____ rough handling.
【单选题】在齿轮油泵装配图的15种零件中,属标准件的序号是
A.
2,3,4,5,10,12,13,14,15
【简答题】the packing must be strong enough to withstand ______(粗暴的) handling.
【单选题】We have made it clear that the packing must be ____ to withstand rough handling.
【单选题】the packing must be strong enough _________ rough handling.
【简答题】设X为一个连续随机变量,其概率密度函数如下: (1)请计算C的值; (2)请根据计算得到的C值,绘出概率密度函数f(x)ltu ; (3)请计算概率分布函数F(x)并给出其曲线图 (4)请计算P(1/3≤x≤2/3), 以及E(X)与V(X)
【判断题】RUP过程模型与其他过程模型的不同之处在于以现实系统分析作为需求分析的基础。