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【简答题】
A. Choose the best answer Fifty years ago I had a young family of three boys. My husband Johnny and I left them with a friend while we made a trip to the cinema. It was dark and was raining hard. With the headlights shining on the road, we saw something ahead of us. Johnny pulled to a stop and I came out, ran to the grass and grabbed a small, wet, frightened creature. It was freezing cold and so tiny that it fit into the palm of my hand but I still wasn't sure what it was. It stayed close to me for warmth and comfort. I wrapped it safely in my woolen hat and suggested that my husband turn back and go home. We thought it was a baby rabbit because it had long ears, long hind legs and was greyish brown in color. Once home, we filled a box with old newspaper and a warm towel. We fed it milk and bread and hoped it would survive.We named our new animal Bobsy. We all loved it at first sight. Our boys were happy with the little animal and it seemed to enjoy all the attention. Sadly though, on the third day with us, it caught its back foot in a door and we quickly realized it was broken. We rushed to the vet, who said, "It's only a rabbit, I'll put it to sleep. "Our response was a very decisive, " No way ! ” We found another vet and were told that she was a baby hare. We were told we should continue to keep her in her box for a week and her foot would be fine. After her recovery, Bobsy learned to use the kitty litter tray. She would comb her long ears with her front paws. Her favourite treats were chocolate drops and she was so smart that she would help herself to them straight from the packet. The local paper heard about this and came to our house to take her photo and write a story about her. We had her for seven wonderful years before we moved to New Zealand and we will never forget her.
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【单选题】某校经济管理类的学生学习统计学的时间(x)与考试成绩(y)之间建立线性回归方程y c=a+bx 。经计算,方程为y c=200—0.8x,该方程参数的计算
A.
a值是明显不对的
B.
b值是明显不对的
C.
a值和b值都是不对的
D.
a值和b值都是正确的
【判断题】在最优控制问题中,如果系统的性能指标是状态变量和控制变量的二次型函数,则称为线性二次型最优控制问题,简称LQ(Linear Quadratic)问题。
A.
正确
B.
错误
【判断题】对于大型购物中心来说,购物、娱乐、餐饮的比例为40:30:30
A.
正确
B.
错误
【单选题】腹股沟管的外环是指
A.
联合肌腱下方的薄弱部分
B.
腹横筋膜的卵圆形裂隙
C.
腹外斜肌腱膜的三角形裂隙
D.
腹膜的卵圆形裂隙
E.
腹内斜肌的卵圆形裂隙
【判断题】在最优控制问题中,如果系统的性能指标是状态变量和控制变量的二次型函数,则称为线性二次型最优控制问题,简称LQ(Linear Quadratic)问题。
A.
正确
B.
错误
【单选题】台湾“日月双影”位于南投县鱼池乡水社村,是台湾唯一的天然湖,由玉山和阿里山之间的断裂盆地积水而成。湖面海拔760米,面积约9平方千米,平均水深30米,湖周长约35千米。日月潭四周群山环抱,重峦叠嶂,潭水碧波晶莹,湖面辽阔,群峰倒映湖中,优美如画。每当夕阳西下,新月东升之际,日光月影相映成趣,更是优雅宁静,富有诗情画意。日月潭中有一小岛远望好像浮在水面上的一颗珠子,名珠子屿(光华岛),以此岛为界,北...
A.
又名“日月潭”
B.
属天然湖泊
C.
位于两山之间
D.
湖水最深达30米
【单选题】购物中心的购物、娱乐、餐饮比例
A.
7:2:1
B.
3:3:4
C.
4:4:2
D.
1:1:1
【简答题】一边喝啤酒一边聊天。
【简答题】如图所示,在边长为a的正方形ABCD的对角线AC左右两侧,分别存在垂直纸面向内磁感应强度为B的匀强磁场和水平向左电场强度大小为E的匀强电场, AD、CD是两块固定荧光屏(能吸收打到屏上的粒子)。现有一群质量为m、电量为q的带正电粒子,从A点沿AB方向以不同速率连续不断地射入匀强磁场中,带电粒子速率范围为 不计带电粒子的重力和粒子之间的相互作用。求 恰能打到荧光屏CD上的带电粒子的入射速度
【单选题】Shopping mall(购物林荫道)是对大型购物中心新近流行的一种形象的称呼,它的优势在于:多位于城市郊区,地价相对低廉,拥有大面积停车场,适宜大规模的商业动作,集零销、服务、休闲娱乐、餐饮为一体,选择性强,并提供一站式消费服务。许多专家认为:目前北京已具备有限度发展shopping mall的条件,对比你的看法是()
A.
按照当前我国城市人口的消费水平,北京不具备发展shopping mall的条件
B.
北京已具备条件,因为它是具有国际化色彩的大城市,年轻人追求时尚、刺激,提前消费理念正在逐步形成
C.
北京已具备条件,随着北京卫星城的兴起和家庭轿车的普及,以及对周边地区的辐射和影响力的扩大,对发展shopping mall构成有利的条件
D.
B+C
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