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【单选题】
在服从正态分布条件下，样本标准差的值（）。
A.
与观察例数n有关
B.
与观察例数n无关
C.
与平均数有关
D.
与个体的变异程度有关
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参考答案：
举一反三
【多选题】28-1. 分别向下列溶液通入足量 SO 2 气体,产生沉淀的溶液是
A.
CuSO4溶液
B.
CuCl2溶液
C.
Cu(NO3)2溶液
D.
CuBr2溶液
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【单选题】S1:Now inspection is over. We are ready to load. This is the Notice of Readiness. Will you accept and sign it? S2:Sorry. I can't accept it now. You ship is not ready to load yet.S1:Why, the holds have...
A.
shore labourers.
B.
Charter Party.
C.
Notice of Readiness.
D.
Planks and mats.
查看完整题目与答案
【单选题】— What terrible weather it is? — that it'll get worse later. [     ]
A.
It is reported
C.
It report C. It said C. It supposed
查看完整题目与答案
【简答题】Do you know __________________? A. where does she live B. she lives where C. where she lives D. where she live 2. His parents wanted to know what he ______at that time. A. is ...
查看完整题目与答案
【单选题】S1:Now inspection is over. We are ready to load. This is the Notice of Readiness. Will you accept and sign it? S2:Sorry. I can't accept it now. You ship is not ready to load yet.S1:Why, the holds have...
A.
The stevedores.
B.
The vessel.
C.
The dockers.
D.
The agent.
查看完整题目与答案
【多选题】1 -1. 分别向下列溶液通入足量 SO 2 气体,产生沉淀的溶液是
A.
CuSO 4 溶液
B.
CuCl 2 溶液
C.
Cu( NO 3 ) 2 溶液
D.
CuBr 2 溶液
查看完整题目与答案
【单选题】It is said that Harry,s sister has just come back from Australia.
A.
/
B.
the
C.
a
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【单选题】______ that there′s another good harvest this year. 43.
A.
It says
B.
It is said
C.
It was said
D.
He was said
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【单选题】下列有关化学实验操作的叙述正确的是（　　）
A.
在含有FeCl 2 杂质的FeCl 3 溶液中通入足量Cl 2 后，充分加热，除去过量的Cl 2 ，即可得到纯净的FeCl 3 溶液
B.
向SO 2 溶液中分别滴加Ba（NO 3 ） 2 、BaCl 2 、Ba（OH） 2 溶液，均产生BaSO 3 白色沉淀
C.
向2.0mL浓度均为0.1mol/L的KCl和Kl混合溶液中滴加1～2滴0.01mol/LAgNO 3 溶液，振荡，沉淀呈黄色，说明AgCl的Ksp比AgI的Ksp大
D.
分别电解熔融氯化镁和熔融氯化铝可以制取金属镁和金属铝
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【单选题】It is said that the newly appointed president is ______ of an artist.
A.
anyone
B.
somebody
C.
something
D.
anybody
查看完整题目与答案
相关题目：
【多选题】28-1. 分别向下列溶液通入足量 SO 2 气体,产生沉淀的溶液是
A.
CuSO4溶液
B.
CuCl2溶液
C.
Cu(NO3)2溶液
D.
CuBr2溶液
查看完整题目与答案
【单选题】S1:Now inspection is over. We are ready to load. This is the Notice of Readiness. Will you accept and sign it? S2:Sorry. I can't accept it now. You ship is not ready to load yet.S1:Why, the holds have...
A.
shore labourers.
B.
Charter Party.
C.
Notice of Readiness.
D.
Planks and mats.
查看完整题目与答案
【单选题】— What terrible weather it is? — that it'll get worse later. [     ]
A.
It is reported
C.
It report C. It said C. It supposed
查看完整题目与答案
【简答题】Do you know __________________? A. where does she live B. she lives where C. where she lives D. where she live 2. His parents wanted to know what he ______at that time. A. is ...
查看完整题目与答案
【单选题】S1:Now inspection is over. We are ready to load. This is the Notice of Readiness. Will you accept and sign it? S2:Sorry. I can't accept it now. You ship is not ready to load yet.S1:Why, the holds have...
A.
The stevedores.
B.
The vessel.
C.
The dockers.
D.
The agent.
查看完整题目与答案
【多选题】1 -1. 分别向下列溶液通入足量 SO 2 气体,产生沉淀的溶液是
A.
CuSO 4 溶液
B.
CuCl 2 溶液
C.
Cu( NO 3 ) 2 溶液
D.
CuBr 2 溶液
查看完整题目与答案
【单选题】It is said that Harry,s sister has just come back from Australia.
A.
/
B.
the
C.
a
查看完整题目与答案
【单选题】______ that there′s another good harvest this year. 43.
A.
It says
B.
It is said
C.
It was said
D.
He was said
查看完整题目与答案
【单选题】下列有关化学实验操作的叙述正确的是（　　）
A.
在含有FeCl 2 杂质的FeCl 3 溶液中通入足量Cl 2 后，充分加热，除去过量的Cl 2 ，即可得到纯净的FeCl 3 溶液
B.
向SO 2 溶液中分别滴加Ba（NO 3 ） 2 、BaCl 2 、Ba（OH） 2 溶液，均产生BaSO 3 白色沉淀
C.
向2.0mL浓度均为0.1mol/L的KCl和Kl混合溶液中滴加1～2滴0.01mol/LAgNO 3 溶液，振荡，沉淀呈黄色，说明AgCl的Ksp比AgI的Ksp大
D.
分别电解熔融氯化镁和熔融氯化铝可以制取金属镁和金属铝
查看完整题目与答案
【单选题】It is said that the newly appointed president is ______ of an artist.
A.
anyone
B.
somebody
C.
something
D.
anybody
查看完整题目与答案
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