题目内容

_____

A. 平均响应时间
B. 平均无故障时间(MTBF)
C. 平均修复时间
D. 数据处理速率

查看答案

搜索结果不匹配？点我反馈

更多问题

_______

A. 向垂直方向
B. 向水平方向
C. 按住Ctrl键向垂直方向
D. 按住Ctrl键向水平方向

Two hundred cars ________ since the beginning of the year.

A. sell
B. are sold
C. have sold
D. have been sold

By the end of next semester, we ______ more than three thousand new words.

A. have learned
B. will learn
C. will have learned
D. have been learning

______

A. 128
B. 160
C. 180
D. 220