第10题: [单项选择]下列叙述中错误的是 A. 一种数据的逻辑结构可以有多种存储结构 B. 数据的存储结构与数据处理的效率无关 C. 数据的存储结构与数据处理的效率密切相关 D. 数据的存储结构在计算机中所占的中间不一定是连续的 参考答案:B 答案解析:[解析] 一种数据的逻辑结构根据需要可以表示成多种存储结构,常用的存储结构有顺序,链接、索引等,选项A和选项D正确。采用不同的存储结构,其数据处理的效率不同,因此,在进行数据处理时,选择合适的存储结构
第21题: [单项选择]PAM信号为() A. 模拟信号 B. 数字信号 C. 调相信号 D. 调频信号 参考答案:A
第22题: [单项选择]There was nobody______ when we came round the corner. A. out of sight B. at sight C. by sight D. in sight 参考答案:D 答案解析:短语辨析。out of sight看不见,在视野之外,如:Don't let the children out of your sight.别让孩子们走出你的视野。at sight一看见就,如:She
第24题: [单项选择]{{B}}Section A{{/B}}
{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He enjoyed using his new camera. B. He left his camera at the airport. C. He left his camera in his friend’s car. D. He lost his camera on his trip. 参考答案:C 答案解析:[听力原文]
W: You must have enjoyed using your new camera on your trip.
M: I would have, but I left it