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【简答题】
(8分)设(3 x －1) 8 ＝ a 8 x 8 ＋ a 7 x 7 ＋…＋ a 1 x ＋ a 0 .求： (1) a 8 ＋ a 7 ＋…＋ a 1 ； (2) a 8 ＋ a 6 ＋ a 4 ＋ a 2 ＋ a 0 .
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反馈参考答案：
举一反三
【简答题】观察印刷品颜色时我们选用连续光谱,而不是____,带状,混合状的光谱。
【单选题】El Guadiana, el Ebro,y el Segura son tres -----------------
A.
Volcanes
B.
Ríos
C.
Lagos
D.
Montes
【单选题】— What does the fresh juice contain? — ________of the juice ________ orange. It's very pure.
A.
Four-fifth; are
B.
Four-fifths; are
C.
Four-fifth; is
D.
Four-fifths; is
【单选题】What is pure economic loss?
A.
Financial loss that is caused by physical injury
B.
Financial loss that is not associated with physical injury or property damage
C.
Financial loss that is caused by damage to property
【简答题】What is the color of pure iron?
【简答题】下列关于银行结算账户特点的表述中，不准确的为（ ）。
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