当监理中心试验室试验结果与承包人的试验结果出现允许误差以外的差异时,一般以承包人的试验结果为准。 ( )
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关于FDD(Frequency Division Duplex,频分全双工)描述正确的是 (23) 。
A. FDD是一种允许专用通信的频分技术
B. FDD是一种允许动态介质分配的频分技术
C. FDD是一种允许有保证的信息投递的频分技术
D. FDD是一种允许双向或全双工通信的频分技术
案例分析题为防止系统故障造成系统内文件受损,常采用()方法来保护文件,设计实时操作系统时,必须首先考虑系统的()。 为防止系统故障造成系统内文件受损,常采用()方法来保护文件.
A. 存取控制矩阵
B. 转储
C. 加密
D. 安全核
案例分析题Structured programming practices () rise to Pascal,in which constructs were introduced to make programs more readable and better () . C provided a combination of assembly language and high-level Structure to create a general-purpose language that could be used from system to () programming. Next came object orientation,which is () of a methodology and design philosophy than a language issue.This is () by the addition of so-called OO extensions to current languages,such as C. in which constructs were introduced to make programs more readable and better ()
A. structure
B. structured
C. constructs
D. structures
查找哈希(Hash)表,不会发生冲突的哈希函数是 (34) 。
A. 除留余数法
B. 伪随机探测再散列法
C. 直接地址法
D. 线性探测再散列法