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【简答题】
捕集器设在冷却器后作用是（）。（KHD://工艺基本知识，th=108）
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皮皮学刷刷变学霸
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【单选题】In winter, people in Devon and Cornwall _____________.
A.
seldom see snow
B.
never see any snow
C.
may have several feet of snow
D.
often see snow
【简答题】阅读理解。 Any mistake made in the printing of a stamp raises its value to stamp collectors. A mistake on one inexpensive postage stamp has made the stamp worth a million and a half times its original valu...
【单选题】As far as I know, he is seldom, _______ , late for school.
A.
if so
B.
if never
C.
if ever
D.
if any
【单选题】In winter, people in Devon and Cornwall, ______.
A.
never see any snow
B.
seldom see snow
C.
often see snow
D.
may have seen several feet of snow
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