N-S diagram can used to substitute conventional program flow Chart.In the following phrases,Which does not belong to the basic control structures that contain
A. sequence structure
B. condition Structure
C. selection structure
D. execution structure
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在批处理系统中作业管理可把作业流的状态分成
A. 后备、进入、就绪、退出
B. 进入、后备、运行、退出
C. 后备、等待、就绪、退出
D. 等待、就绪、运行、退出
You must be responsible for all the losses () from your delay in opening the covering L/C.
A. arising
B. rising
C. arousing
D. have arisen
We are making you our quotation for shoes ____.
A. as follows
B. as following
C. as follow
D. following
在OSI参考模型中,数据链路层向网络层提供的基本服务有 Ⅰ.数据链路的建立,维护与释放 Ⅱ.数据链路层服务数据单元帧的传输 Ⅲ.在多点连接或多条数据链路连接的情况下,提供数据链路端口标识的识别,支持网络层实体建立网络连接 Ⅳ.封装数据单元
A. 全部
B. Ⅰ、Ⅱ和Ⅲ
C. Ⅰ和Ⅳ
D. Ⅱ和Ⅲ