【简答题】19世纪60年代,法国学者巴斯德做了下面的实验:把澄清的肉汤倒入两个鹅颈烧瓶中,把其中的一瓶肉汤A加热煮沸,而另一瓶肉汤B则不加热煮沸.几天后,未煮沸的肉汤B变得浑浊,而煮沸的肉汤A仍保持澄清.接着,巴斯德打破了盛有澄清肉汤A的鹅颈烧瓶的瓶颈.数日后,澄清的肉汤A变得浑浊.请回答下列问题. (1)将肉汤A煮沸是为了______. (2)几天后肉汤B变浑浊,说明肉汤B中______(选填“有”或“没...
【单选题】听力原文:From an early date bankers have made a charge for the services which they provide for their customers. (9)
A.
From an early date the banker have charged a commission for their services.
B.
From an early date the banker has an obligation to serve the customers.
C.
From an early date the customers have charged a commission.
D.
From an early date the customer has an obligation to serve the banker.
【单选题】The charge for a telephone call made at 10: 00 a. m. from City Y to City X is $ 0. 50 for the first minute and $ 0. 34 for each additional minute. At these rates, what is the difference between the to...
【单选题】关于Python的数字类型,以下选项中描述错误的是
A.
浮点数也有十进制、二进制、八进制和十六进制等表示方式
【简答题】新加坡房型设计大陆完败 新加坡地处热带,常常处于阳光直射之下,房屋朝向无所谓南北,因此大多数新加坡人在购房时不分南北,中国的改革开放吸引了许多外商,新加坡的投资者们也将目光转向大陆,他们选择了新兴的房地产行业,但由于没有经过实际的市场调查与研究,建造房屋时照搬了新加坡的房屋设计,朝南的地方设计成厨房、卫生间,而把客厅、卧室放在北侧,结果在大陆市场上惨遭失败。 请讨论: 这个案例体现了市场调查的什么...
【单选题】关于Python的数字类型,以下选项中描述错误的是
D.
浮点数也有十进制、二进制、八进制和十六进制等表示方式
【简答题】An (add)______ charge was made for the overweight letter.
【单选题】the charge made for transpoting goods
【多选题】社会治理是社会建设的重大任务,是国家治理的重要内容。加强和创新社会治理主要办法