问题 单项选择题

冗余技术通常分为4类,其中______按照工作方法可以分为静态、动态和混合冗余。

A.时间冗余
B.信息冗余
C.结构冗余
D.冗余附加技术

答案

参考答案:C

写作题

书面表达

Jill是一名初三的学生。她很喜欢玩电脑,但她现在每天有很多的功课,没时间去做自己的兴趣爱好。她感到很苦恼。她写了封信给Sigmund,希望能得到一些建议。

不少于60个字,开头结尾已给出,不计数。

Dear Sigmund,

I am a Grade 9 student.                                                       

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

                                                                             

Best wishes.

Yours sincerely,

Jill

单项选择题