皮皮学，免费搜题
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【简答题】
（本小题满分10分） 某校从高一年级期末考试的学生中抽出 名学生，其成绩（均为整数）的频 率分布直方 图如图所示： （Ⅰ）估计这次考试的及格率（ 分及以上为 及格）和平均分（同一组中的数据用该组区间的中点值作代表 ） （Ⅱ）从成绩是 分以上（包括 分）的学生中选两人，求他们在同一分数段的概率.
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皮皮学刷刷变学霸
举一反三
【单选题】低张性低氧血症引起组织缺氧,一般动脉血氧分压须低于:
A.
12.0Kpa(90mmHg)
B.
10.7Kpa(80mmHg)
C.
9.3Kpa(70mmHg)
D.
8.0Kpa(60mmHg)
E.
6.7Kpa(50mmHg)
【单选题】低张性低氧血症引起组织缺氧,一般动脉血氧分压须低于( )
A.
12.0kPa(90mmHg)
B.
10.7kPa(80mmHg)
C.
9.3kPa(70mmHg)
D.
8.0kPa(60mmHg)
E.
6.7kPa(50mmHg)
【简答题】Just as I started to think that I was never going to get well, the illness began to ( ) .
【单选题】Just as I started to think that I was never going to get well, the illness began to ______.
A.
recede
B.
shorten
C.
redeem
D.
reduce
【单选题】Just as I started to think that I was never going to get well, the illness began to _____.
A.
intervene
B.
stop
C.
hop
D.
recede
【单选题】5 Just as I started to think that I was never going to get well, the illness began to _____.
A.
intervene
B.
ascend
C.
dismay
D.
recede
【单选题】低张性低氧血症引起组织缺氧其动脉血氧分压一般要低于______
A.
12.0kPa(90mmHg)
B.
10.7kPa(80mmHg)
C.
9.3kPa(70mmHg)
D.
8.0kPa(60mmHg)
【单选题】Just as I started to think that I was never going to get well, the illness began to _____.
A.
recede
B.
accede
C.
descend
D.
ascend
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