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【单选题】
设随机变量 服从泊松分布 ,则其数学期望为( ).
A.
;
B.
;
C.
;
D.
.
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参考答案:
举一反三
【单选题】In 89 BC, Pompeii became a rich and busy city and near the city ____ a volcano.
A.
be
B.
being
C.
had
D.
Was
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【单选题】用来衡量心界增大与否及增大程度常用的垂直成为
A.
前正中线
B.
锁骨中线
C.
腋前线
D.
胸骨缘
E.
腋前线
查看完整题目与答案
【简答题】What does Kirsty feel about the city? [A]It is a big and busy city. [B]It is so frightening. [C]It is really great city.
查看完整题目与答案
【单选题】雨后看到的彩虹,下列说法错误的是( )
A.
是一种色散现象
B.
是一种折射现象
C.
是一种散射现象
D.
雨后空中漂浮着很多小水滴,这些小水滴就似三棱镜,太阳光经过小水滴两次折射后分解成七色光
查看完整题目与答案
【单选题】下列施工成本管理活动或文件中,属于施工项目降低成本的指导文件及设立目市故本依据的是( )。
A.
施工成本核算
B.
施工成本分析
C.
施工成本计划
D.
施工成本管理
查看完整题目与答案
【单选题】)Beijing is one of the ______ in the world today.
A.
busiest city
B.
busiest cities
C.
busy city
D.
busy cities
查看完整题目与答案
【单选题】What does Kirsty feel about the city?
A.
It is a big and busy city.
B.
It is so frightening.
C.
It is really great city.
查看完整题目与答案
【单选题】下列施工成本管理活动或文件中,属于施工项目降低成本的指导文件及设立目标成本依据的是( )。
A.
施工成本预测
B.
施工成本分析
C.
施工成本计划
D.
施工成本核算
查看完整题目与答案
【单选题】In the 1700s Savannah became a busy port city for exporting farm products and a city with lot of banks.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【单选题】Linda has made an appointment _____David. [ ]
A.
for
B.
from
C.
with
D.
to
查看完整题目与答案
相关题目:
【单选题】In 89 BC, Pompeii became a rich and busy city and near the city ____ a volcano.
A.
be
B.
being
C.
had
D.
Was
查看完整题目与答案
【单选题】用来衡量心界增大与否及增大程度常用的垂直成为
A.
前正中线
B.
锁骨中线
C.
腋前线
D.
胸骨缘
E.
腋前线
查看完整题目与答案
【简答题】What does Kirsty feel about the city? [A]It is a big and busy city. [B]It is so frightening. [C]It is really great city.
查看完整题目与答案
【单选题】雨后看到的彩虹,下列说法错误的是( )
A.
是一种色散现象
B.
是一种折射现象
C.
是一种散射现象
D.
雨后空中漂浮着很多小水滴,这些小水滴就似三棱镜,太阳光经过小水滴两次折射后分解成七色光
查看完整题目与答案
【单选题】下列施工成本管理活动或文件中,属于施工项目降低成本的指导文件及设立目市故本依据的是( )。
A.
施工成本核算
B.
施工成本分析
C.
施工成本计划
D.
施工成本管理
查看完整题目与答案
【单选题】)Beijing is one of the ______ in the world today.
A.
busiest city
B.
busiest cities
C.
busy city
D.
busy cities
查看完整题目与答案
【单选题】What does Kirsty feel about the city?
A.
It is a big and busy city.
B.
It is so frightening.
C.
It is really great city.
查看完整题目与答案
【单选题】下列施工成本管理活动或文件中,属于施工项目降低成本的指导文件及设立目标成本依据的是( )。
A.
施工成本预测
B.
施工成本分析
C.
施工成本计划
D.
施工成本核算
查看完整题目与答案
【单选题】In the 1700s Savannah became a busy port city for exporting farm products and a city with lot of banks.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【单选题】Linda has made an appointment _____David. [ ]
A.
for
B.
from
C.
with
D.
to
查看完整题目与答案
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