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【单选题】
增压器的增压压力下降，同时转速也下降，其形成的原因可能是（）。A.
压气机叶轮背面的气封漏气
B.
压气机内部的气流通道受阻
C.
喷嘴环变形及涡轮前排气管胀缩接头漏气
D.
扫气箱漏气
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反馈参考答案：
举一反三
【单选题】Choose the authors who Belong to the romantic group in American literature.
A.
Ralph Waldo Emerson
B.
Henry David Thoreau
C.
Nathaniel Hawthorne
D.
Herman Melville
E.
Walt Whitman
F.
All of the above
【单选题】Whats the authors attitude toward the nationalization this time?
A.
Supportive.
B.
Opposed.
C.
Worried.
D.
Uncaring.
【多选题】The authors of Lyrical Ballad s are _____________(Choose TWO).
A.
William Wordsworth
B.
William Blake
C.
Percy Bysshe Shelly
D.
Samuel Taylor Coleridge
【多选题】Choose the authors who belong to the romantic group in American literature.
A.
Henry David Thoreau
B.
Nathaniel Hawthorne
C.
Herman Melville
D.
Walt Whitman
【多选题】Choose the authors who belong to the romantic group in American literature. ( )
A.
Nathaniel Hawthorne
B.
Henry David Thoreau
C.
Benjamin Franklin
D.
Ralph Waldo Emerson
【多选题】Choose the authors who belong to the romantic group in American literature.
A.
Ralph Waldo Emerson
B.
Henry David Thoreau
C.
Nathaniel Hawthorne
D.
Herman Melville
E.
Walt Whitman
【简答题】Among the following 3 authors the one who later became a naturalized British citizen was ---. A.Mark Twain B. Fitzgerald C.Henry James
【判断题】用连接圆弧R连接两已知圆弧R1和R2,在求取连接圆弧的圆心O时,要以O1和O2为圆心画弧,此时的圆弧半径确定方法是:若为外切,则连接圆弧与已知圆弧半径相加;若为内切,则半径相减。A. 不明白 B. 错误 C. 正确
A.
正确
B.
错误
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