皮皮学,免费搜题
登录
搜题
【简答题】
British Pub Culture Visitors to Britain may find the best place to sample local culture is in a traditional pub. But these friendly hostelries can be minefields of potential gaffes for the uninitiated. An anthropologist and a team of researchers have unveiled some of the arcane rituals of British pubs--starting with the difficulty of getting a drink. Most pubs have no waiters--you have to go to the bar to buy drinks. A group of Italian youths waiting 45minutes before they realized they would have to fetch their own. This may sound inconvenient, but there is a hidden purpose. Pub culture is designed to promote sociability in a society known for its reserve. Standing at the bar for service allows you to chat with others waiting to be served. The bar counter is possibly the only site in the British Isles in which friendly conversation with strangers is considered entirely appropriate and really quite normal behavior. "If you haven't been to a pub, you haven't been to Britain." This tip can be found in a booklet, Passport to the Pub: The Tourists' Guide to Pub Etiquette, a customer ’ s code of conduct for those wanting to sample "a central part of British life and culture". The trouble is that if you do not follow the local rules, the experience may fall flat. For example, if you are in a big group, it is best if only one or two people go to buy the drinks. Nothing irritates the regular customers and bar staff more than a gang of strangers blocking all access to the bar while they chat and dither about what to order .
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】把对象实例化可以生成多个对象,使用()为对象分配内存空间。
【简答题】把对象实例化可以生成多个对象,使用 ______运算符位对象分配内存空间
【多选题】关于平面汇交力系合成的解析法,下列说法正确的是( )
A.
力在坐标轴上的投影是一个标量
B.
规定:力在坐标轴上的投影方向和坐标轴方向相反时,投影取正值
C.
F的分力大小与力F在同一轴上的投影的绝对值不一定相等
D.
平面汇交力系平衡的充要条件是,该力系的合力为0
【单选题】平面汇交力系的平衡条件是该力系的合力一定( )。
A.
为一定值
B.
等于零
C.
不能确定
D.
小于零
【单选题】建筑施工图中详图符号的圆应以直径为( )粗实线绘制。
A.
10mm
B.
12mm
C.
14mm
D.
16mm
【单选题】有一增量式光电编码器,其参数为1024p/r,在5s时间内测得65536个脉冲,那么转轴一分钟转( )圈。
A.
768
B.
669
C.
1200
D.
1500
【简答题】有一增量式光电编码器,其参数为 1024 p /r,采用4细分技术,编码器与丝杠同轴连接,丝杠螺距t=6mm,光电编码器与丝杠的连接如图所示。当丝杠从图中所示的基准位置开始旋转,在0.5s时间里,光电编码器后续的细分电路共产生了N=4×51456个脉冲。请列式计算: ( 1)丝杠共转过多少圈? ( 2)丝杠的平均转速n为多少(r/min)? ( 3)螺母从图中所示的基准位置移动了多少位移(mm)?...
【单选题】平面汇交力系平衡的必要和充分条件是该力系的合力为( )。
A.
最小
B.
最大
C.
D.
某一定值
【单选题】建筑施工图中详图符号的圆应以直径为( )mm的粗实线绘制。
A.
10
B.
12
C.
14
D.
16
【简答题】某菜场为了解顾客对三种肉食(猪肉、牛肉、羊肉)的喜好程度, 调査了 200 人。分别有 85 人、 41 人、 74 人最喜欢猪肉、牛肉、羊肉。取 水平 a = 0.05, 检验 “ 顾客 对这三种肉食的喜好程度相同 ” 的假设。 解: 由题可知 , r=3,n=200,假设顾客对这三种肉食的喜好程度相同,即顾客选择这三种肉食的概率是相同的。所以我们可以进行以下假设: 原假设 H 0 :P 1 =...
相关题目: