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【简答题】
字符 ’ A’ 的 ASCII 码是 ,字符 ’ a’ 的 ASCII 码是 。
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【单选题】–Have you handed in your schoolwork yet? --Yes, I have. I guess it ________ now.
A.
has graded
B.
is graded
C.
is being graded
D.
is grading
【简答题】The End of the Book? [A] Amazon, by far the largest bookseller in the country, reported on May 19 that it is now selling more books in its electronic Kindle format than in the old paper-and-ink format...
【简答题】阅读下面短文，用括号内所给动词的适当形式填空（必要时可加助动词或情态动词） The largest problem among agers is that they are too stressed. Mary, a 26-year-old girl, 1.(worry) about her exams very often. Although she 2. (study) English...
【简答题】The End of the Book? A) Amazon, by far the largest bookseller in the country, reported on May 19 that it is now selling more books in its electronic Kindle format than in the old paper-and-ink format....
【单选题】关于控制角，表述正确的是下面的哪一个？
A.
从 SCR 承受正向阳极电压起到施加触发脉冲止的电角度称为触发延迟角，也称触发角或控制角。
B.
晶闸管在一个电源周期中处于通态的电角度称为控制角。
C.
晶闸管的控制角也称为导通角。
D.
晶闸管的控制角等于导通角加 30 度。
【简答题】阅读下面短文，用括号内所给动词的适当形式填空（必要时可加助动词或情态动词） The largest problem among agers is that they are too stressed. Mary, a 16-year-old girl, 小题1: .(worry) about her exams very often. Although she小题2: . (study) ...
【单选题】I guess Henry has been busy writing an article __________ recently. That’s why he couldn’t accept the invitation.
A.
out of date
B.
respectable
C.
or something
D.
know by heart
【简答题】10) I guess Henry has been busy writing an article ________ recently. That’s why he couldn’t accept the invitation.
【简答题】I guess Henry has been busy writing an article ____________ recently.That's why he couldn't accept the invitation.
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