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【简答题】
无粘结预应力筋由______、______和外包层组成。
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皮皮学刷刷变学霸
举一反三
【简答题】投影线是指一条( )沿某一方向向曲面作投影时形成的影子线
【单选题】He hadn't _______ quite what was wrong with .his mother. He knew, though, that she hadn't been well for some time now.
A.
worked off
B.
worked on
C.
worked out
D.
worked at
【单选题】Although he has lived with us for years, he_____ us much impression. [ ]
A.
hadn't left
B.
hadn't been left
C.
hasn't been left
D.
hasn't left
【简答题】()是指一条曲线沿某一方向向曲面作投影时形成的影子线
【简答题】В настоящее время ( )
более 50 товаров, являющихся обьектами биржевой торговли.A. А. имеется B. В. насчитывается C. С. насчитывали D. Д. насчитывалось
【单选题】He demanded that we explain why things went wrong,______?
A.
hadn't we
B.
hadn't he
C.
didn't we
D.
didn't he
【单选题】He demanded that we explain what was happening,
A.
hadn't we
B.
didn't we
C.
hadn't he
D.
didn't he
【简答题】投影线是指一条曲线沿某一方向向曲面作投影时形成的()
【单选题】The little boy didn't know _______. [ ]
A.
Which hat is his
B.
which hat his is
C.
which hat was his
D.
which hat his was
【单选题】Ted together with his friends had a good time when hiking, ?
A.
didn’t he
B.
hadn’t he
C.
didn’t they
D.
hadn’t they
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