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【多选题】
下列命题中,正确的有:A.
三角形三内角之和等于180度
B.
n边形n内角之和等于180度×(n-2)
C.
n边形n内角之和等于180度
D.
n边形n外角之和等于360度
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举一反三
【单选题】The service of a professional adviser is supplied through a visit to him by his foreign client. According to the definition of trade in service in GATS, this service is .
A.
cross border supply of service
B.
consumption abroad
C.
commercial presence in the consuming country
D.
presence of natural persons
【单选题】下列关于数字电路和模拟电路的叙述中,对的是
A.
处理数字信号的电路称为模拟电路
B.
处理模拟信号的电路称为数字电路
C.
数字电路和模拟电路的分析方法相同
D.
数字电路中工作的三极管不是工作在饱和区，就是截止区
【单选题】The presence of the customer as a participant in the service process requires service firms to separate themselves into ( )and ( ).
A.
common service area, VIP service area
B.
center office area, facilitating office area
C.
front office, back office
【单选题】Which service the hotel cannot provide for the guests?
A.
Cash deposit-and-withdraw service.
B.
Wake-up call service
C.
Laundry service
D.
Extra bed service
【简答题】情景作文 。 假设你是红星中学高二（1）班的学生李华。下面四幅图描述了上周五你参加的一次 拓展训练活动。请根据图片的先后顺序，用英语为校刊写一篇短文。词数不少于60。 参考词汇：outward bound 拓展训练 _______________________________________________________________________________ ____________...
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