题目内容

I was as much at a loss __________.

A. as the others did
B. as others all were
C. as others have done
D. as all the others were

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By the end of July ,you __________ here for three years.

A. will have studied
B. studied
C. will study
D. having studied

下列哪种说法是错误的（）。

A. 净值是资产原值减去其累计折旧的差额
B. 残值是设备报废时的残余价值
C. 净残值为设备报废拆除后留余的材料、零部件或残体的价值
D. 净残值是残值减去清理费用后的余额

功率的单位是:

A. 安(培)
B. 瓦(特)
C. 伏(特)
D. 欧(姆)

无线电常用度量单位的词头m的意义为:(”x^m”表示“x的m次方”)

A. 10^6
B. 10^3
C. 10^(-3)
D. 10^(-6)