質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image044.jpg)
A．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image147.gif)
B．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image149.gif)
C．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image151.gif)
D．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image153.gif)
10．在正質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image138.gif)
中，若點質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image140.gif)
分別是質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image142.gif)
的中點，則以質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image144.gif)
為焦點，且過 的雙曲線的離心率為
A．最大值質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image135.gif)
B．最小值 C．最大值6 D．最小值6
9．若實數(shù)質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image129.gif)
滿足質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image131.gif)
，則質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image133.gif)
有
A．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image121.gif)
B．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image123.gif)
C．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image125.gif)
D．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image127.gif)
8．由曲線質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image117.gif)
和直線質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image119.gif)
所圍成的封閉圖形的面積為
D．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image114.gif)
，乙比甲成績穩(wěn)定
C．，甲比乙成績穩(wěn)定
B．質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image112.gif)
，乙比甲成績穩(wěn)定
質(zhì)量監(jiān)測（數(shù)學(xué)理）.files/image110.jpg)
A．，甲比乙成績穩(wěn)定
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