【单选题】Drunken driving — sometimes called American's socially accepted form. of murder — has become a national 【C1】______ Every hour of every day about three Americans on average are killed by drunken driver...
【简答题】Alcohol has a n____________ (显而易见的)effect on the body.
【简答题】机构具有确定运动的条件是 。 a. 自由度数目>原动件数目; b. 自由度数目<原动件数目; c. 自由度数目=原动件数目 2 、图 1-5 所示两构件构成的运动副为 。 a. 高副; b. 低副 3 、如图 1-6 所示,图中 A 点处形成的转动副数为 个。 a. 1 ; b. 2 ; c. 3
【简答题】题 2 1. 请在图中指出局部自由度和虚约束、复合铰链 2. 数活动构件数目: n= 3. 数运动副数目: 低副有 , 高副 个 4. 计算机构自由度: 5. 判断机构是否有确定运动:
【单选题】设随机变量【图片】与【图片】互相独立,且【图片】,【图片】,令【图片】,则【图片】( ).
【单选题】影响新西兰南岛降水特点的气压带或风带是 A. 东南信风带 B. 中纬西风带 C. 副热带高气压带 D. 副极地低气压带
【简答题】阅读理解。 Drunken driving-sometimes called America's socially accepted form of murder-has become a national epidemic (流行病). Every hour of every day about three Americans on average are killed by drunken d...