设有一个存储器,容量是256KB,cache容量是2KB,每次交换的数据块是16B。则主存可划分为 (7) 块,cache地址需 (8) 位。 (7)处填()。
A. 128
B. 16K
C. 16
D. 128K
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Over a million people visit Hawaii (夏威夷) each year because of its beautiful weather and wonderful scenery. The Hawaii islands have very mild temperatures. For instance, August, the hottest month, average 78.4°F, while February, the coldest month, averages 71.9°F. In addition, the rainfall in Hawaii is not very heavy because mountains on the northern side of each island stop incoming storms; for example, Honolulu averages only 23 inches of rain per year. The beautiful weather helps tourists to enjoy Hawaii’s wonderful natural scenery, from mountain waterfalls to fields of flowers and fruits. And Hawaii’s beautiful beaches are everywhere--.from the lovely Kona coast beaches on the large island of Hawaii to Waikiki Beach on Oahu. Warm sunshine and beautiful beaches--it is not surprising that so many people visit Hawaii each year. Are you going to join us Don’t miss the chance! Hawaii Famous for its (46) and (47) . Average temperature: range from 71.9°F to (48) . Annual rainfall in Honolulu: (49) . Attractions for tourists: the beautiful weather and (50) .
著名的软件工程专家Boehm于1983年提出了软件工程的七条基本原理:用分阶段的生命周期计划严格管理、 (10) 、实行严格的产品控制、采用现代程序设计技术、明确责任、 (11) 、承认不断改进软件工程实践的必要性。(注意,答案须按顺序排列。) (11)处填()。
A. 坚持进行阶段评审
B. 采用带风险分析的软件开发模型
C. 对开发小组成员要进行相关培训
D. 开发小组的人员应该少而精
E. 要制定详细的软件测试计划
F. 要严格控制项目开发进度
职员关系模式为E(Eno,Ename,Dept,Eage,Eaddr),其中Eno表示职员号,Ename表示职员名,Dept表示职员所在部门,Eage表示年龄,Eaddr表示职员的家庭住址。建立“开发部”职员的视图DS_E(DS表示开发部)如下,要求进行修改、插入操作时保证该视图只有开发部的职员。CREATE VIEW DS_EAS SELECT Eno,Ename,Dept,Eage,EaddrFROM E WHERE (64) 如下SQL语句可以查询开发部姓“王”职员的姓名和家庭住址。SelectEname,Eaddr From DS_E Where (65) ; (64)处填()。
A. Dept=DS
B. Dept=DS WITH CHECK OPTION
C. Dept=’DS’
Dept=’DS’ WITH CHECK OPTION
采用公允价值模式计量的对外出租的投资性房地产,由于不计提折旧也不进行摊销,因此只有其他业务收入,没有其他业务成本。( )
A. 对
B. 错