【判断题】包装在满足产品的基本要求(安全,便利)之后,其重要性更多体现在心理功能上。
【判断题】行李部门应要按照重要旅客行李到达信息卸机,无信息时,要等待确认好后再卸机。
【简答题】Study the following charts carefully and write an essay in which you should: 1) describe the chart briefly, 2) interpret the causes of it, and 3) give your comment on the tendency. Your composition sh...
【单选题】For details of these and other lights the larger scale charts and Admiralty Lists should be __.
【简答题】Write an essay based on the charts. In your writing, you should 1) interpret the charts, and 2) give your comments. You should write about 150 words.
【多选题】在典型的商业信用中实际包括两个同时发生的经济行为,即( )。
【单选题】Charts should be corrected by using information published in the ______.
B.
American Practical Navigator
【多选题】根据投影图判断,直线在平面上的是( )。
【单选题】To ______ Admiralty Charts 438,latitudes taken from this chart should be increased by about 5 seconds.
【简答题】设总体X服从指数分布,其概率密度为 其中θ>0未知,从总体中抽取一容量为n的样本X 1 ,X 2 ,…,X n (1)证明 (2)求θ的置信水平为1-α的单侧置信下限; (3)某种元件的寿命(以小时计)服从上述指数分布,现从中抽得一容量n=16的样本,测得样本均值为5010(h),试求元件的平均寿命的置信水平为0.90的单侧置信下限