题目内容

A．trainedB．designedC．planedD．studied

A. trained
B. designed
C. planed
D. studied

查看答案

搜索结果不匹配？点我反馈

更多问题

假设某计算机CPU在一秒发出40个磁盘I/O请求，这些请求(为M/M/1队列)的时间间隔按指数分布，平均磁盘服务时间为20ms，则磁盘的平均利用率为(58)，磁盘请求的平均响应时间为(59)ms。

A. 0.2
B. 0.4
C. 0.8
D. 1

The manager spoke highly of such ______ as loyalty, courage and truthfulness shown by his

A. virtue
B. features
C. properties
D. characteristics

A．CPMB．Network DiagramC．PERTD．Gantt chart

A. CPM
B. Network Diagram
C. PERT
D. Gantt chart

A．NOT NULLB．NOT NULL UNIQUEC．PRIMARY KEY（Sno)D．PRIMARY KEY（Sname)

A. NOT NULL
B. NOT NULL UNIQUE
C. PRIMARY KEY(Sno)
D. PRIMARY KEY(Sname)