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【单选题】听力原文：W: Professor Nelson, could you please turn up the temperature here? I'm having a fever. M: Yeah, I understand, but I don't control the thermostat. Tell you what, I'll talk to maintenance about it...
A.
He can't do anything about it.
B.
The temperature is just suitable for him.
C.
He will ask the maintenance for help.
D.
The woman should bring more clothes.
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【单选题】下列物质既可以作氧化剂又可以作还原剂的是（    ）
A.
硫酸
B.
硫化钠
C.
硝酸
D.
亚硝酸
查看完整题目与答案
【单选题】听力原文：W: Professor Nelson, could you please turn up the temperature here? I'm having a fever. M: Yeah, I understand, but I don't control the thermostat. Tell you what, I'll talk to maintenance about it...
A.
He can't do anything about it.
B.
The temperature is just suitable for him.
C.
He will ask the maintenance for help.
D.
The woman should bring more clothes.
查看完整题目与答案
【单选题】Suppose the earth’s temperature rose by 3 degrees，________．
A.
all the land in the World would be flooded
B.
crops would be unable to grow on the earth
C.
great harm would be done to mankind
D.
the sea level would go by lo centimetres
查看完整题目与答案
【单选题】听力原文：M: The temperature is supposed to reach 35℃ today and go down to 22℃ this evening. W: Isn't that 13 degrees difference? Q: What is the evening temperature forecast? (15)
A.
30℃.
B.
13℃.
C.
35℃.
D.
22℃.
查看完整题目与答案
【单选题】荔波有哪一位无产阶级革命家的故居
A.
王若飞
B.
邓恩铭
C.
周达文
D.
周逸群
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【单选题】下列物质中，既可以作为氧化剂，又可以作为还原剂的是（）
A.
FeSO 4
B.
Fe
C.
F 2
D.
H 2
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【判断题】公文的特定效用是指现实效用，任何公文都不可能永远有效。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】对于反应 14CuSO 4 +5FeS 2 +12H 2 O=7Cu 2 S+5FeSO 4 +12H 2 SO 4 ，下列说法正确的是（　　）
A.
只有硫酸铜作氧化剂
B.
SO 4 2- 既不是氧化产物又不是还原产物
C.
被氧化的硫与被还原的硫的质量比为3：7
D.
1mol硫酸铜可以氧化 5 7 mol的硫
查看完整题目与答案
【单选题】对于反应14CuSO 4 +5FeS 2 +12H 2 O→7Cu 2 S+5FeSO 4 +12H 2 SO 4 ，下列说法正确的是（  ）
A.
只有硫酸铜作氧化剂
B.
SO 4 2- 既不是氧化产物又不是还原产物
C.
被氧化的硫与被还原的硫的质量比为3：7
D.
1mol硫酸铜可以氧化5/7mol的硫原子
查看完整题目与答案
相关题目：
【单选题】听力原文：W: Professor Nelson, could you please turn up the temperature here? I'm having a fever. M: Yeah, I understand, but I don't control the thermostat. Tell you what, I'll talk to maintenance about it...
A.
He can't do anything about it.
B.
The temperature is just suitable for him.
C.
He will ask the maintenance for help.
D.
The woman should bring more clothes.
查看完整题目与答案
【单选题】下列物质既可以作氧化剂又可以作还原剂的是（    ）
A.
硫酸
B.
硫化钠
C.
硝酸
D.
亚硝酸
查看完整题目与答案
【单选题】听力原文：W: Professor Nelson, could you please turn up the temperature here? I'm having a fever. M: Yeah, I understand, but I don't control the thermostat. Tell you what, I'll talk to maintenance about it...
A.
He can't do anything about it.
B.
The temperature is just suitable for him.
C.
He will ask the maintenance for help.
D.
The woman should bring more clothes.
查看完整题目与答案
【单选题】Suppose the earth’s temperature rose by 3 degrees，________．
A.
all the land in the World would be flooded
B.
crops would be unable to grow on the earth
C.
great harm would be done to mankind
D.
the sea level would go by lo centimetres
查看完整题目与答案
【单选题】听力原文：M: The temperature is supposed to reach 35℃ today and go down to 22℃ this evening. W: Isn't that 13 degrees difference? Q: What is the evening temperature forecast? (15)
A.
30℃.
B.
13℃.
C.
35℃.
D.
22℃.
查看完整题目与答案
【单选题】荔波有哪一位无产阶级革命家的故居
A.
王若飞
B.
邓恩铭
C.
周达文
D.
周逸群
查看完整题目与答案
【单选题】下列物质中，既可以作为氧化剂，又可以作为还原剂的是（）
A.
FeSO 4
B.
Fe
C.
F 2
D.
H 2
查看完整题目与答案
【判断题】公文的特定效用是指现实效用，任何公文都不可能永远有效。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】对于反应 14CuSO 4 +5FeS 2 +12H 2 O=7Cu 2 S+5FeSO 4 +12H 2 SO 4 ，下列说法正确的是（　　）
A.
只有硫酸铜作氧化剂
B.
SO 4 2- 既不是氧化产物又不是还原产物
C.
被氧化的硫与被还原的硫的质量比为3：7
D.
1mol硫酸铜可以氧化 5 7 mol的硫
查看完整题目与答案
【单选题】对于反应14CuSO 4 +5FeS 2 +12H 2 O→7Cu 2 S+5FeSO 4 +12H 2 SO 4 ，下列说法正确的是（  ）
A.
只有硫酸铜作氧化剂
B.
SO 4 2- 既不是氧化产物又不是还原产物
C.
被氧化的硫与被还原的硫的质量比为3：7
D.
1mol硫酸铜可以氧化5/7mol的硫原子
查看完整题目与答案