题目内容

SF6为何可以作为高压绝缘气体？

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---I’ll pay you by check monthly. ---I’d rather you ____ me in cash weekly.

A. pay
B. paid
C. had paid
D. will pay

Which of the following can best serve as the title of the passage？

A. Rent or Buy？
B. A New Way of Getting Home Furnishings.
C. Furnished Apartments.
D. A New Ide

小型厂矿企业内的次要道路不得低于()m。

A. 3
B. 3.5
C. 4
D. 6

使用海明码进行前向纠错，假定码字为a6a5a4a3a2alao,并且有下面的监督关系式： S2=a2+a4+a5+a6

A. a3
B. a4
C. a5
D. a6