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Advertising：how to ensure that advertisements appeal to consumers
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【单选题】The rate for the package is based on 'double occupancy', which means that ______.
A.
the charge is the same for two people in the room as it is for one person
B.
the per-person charge is based on two people in a room, so the price is twice the quoted rate
C.
the charge is the same for one person in the room as it is for two people
D.
the room rate changes with each additional person in the room
【简答题】已知无向图G的边数m=13，3个2度顶点，2个3度顶点，1个4度顶点，其余的顶点均为5度顶点．试求G中5度顶点的个数。
【简答题】无机框图下图为中学化学中几种常见物质的转化关系（部分产物已略去）．已知：A、C、D是常见的气体单质，F气体极易溶于水，且液态常做致冷剂． （1）写出化学式F______，写出电子式G______； （2）鉴定G中阳离子的实验方法和现象______； （3）D单质和E溶液反应，生成一种常见的消毒剂和漂白剂的有效成分，写出D+E溶液反应的离子方程式和③的化学方程式______、______． （4）工...
【简答题】已知无向简单图G中,有10条边,4个3度结点,其余结点的度均小于或等于2,问G中至少有多少个结点?在最少顶点的情况下,写出G的度数序列,最大度及最小度。
【简答题】已知无向图 , 其中: , , . (1)根据条件画出图形; (2)写出邻接矩阵; (3)计算各结点的度数.
【单选题】One function of the program is that it allows the owner to ______ at a distance.
A.
change some access details for switching on the laptop
B.
turn on the laptop by using the original password
C.
operate the laptop by means of an alternative password
D.
erase the information kept in the stolen laptop
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