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【单选题】
今欲测定某含 Fe 、 Cr 、 Si 、 Ni 、 Mn 、 Al 等的矿样中的 Cr 和 Ni, 用 Na 2 O 2 熔融 , 应采用的坩埚是
A.
铂坩埚
B.
银坩埚
C.
铁坩埚
D.
石英坩埚
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参考答案：
举一反三
【简答题】5h.mp3: Many liberal Democratic voters have become________(4wds) made in Congress, and they will be sorely disappointed if the health care effort fails.
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【单选题】下列哪个不是按照岩浆岩矿物成分划分的类别
A.
原生矿物
B.
他生矿物
C.
自生矿物
D.
次生矿物
查看完整题目与答案
【简答题】我国土地资源的利用和保护情况
查看完整题目与答案
【简答题】In my opinion, all Mr Tom______ good to his students in his class at present. He is very strict in theirstudy. A. doesdoes does    B. does do do C. doesdoes do      D. did do does
查看完整题目与答案
【单选题】— Have all the students know that our class will visit the factory this afternoon. — Yes, Every student _____ about it. [     ]
A.
have told
B.
have been told
C.
has told
D.
has been told
查看完整题目与答案
【单选题】我国土地资源的基本特点不包括（）。
A.
绝对数量小，人均占有少
B.
类型复杂多样，耕地比重小
C.
利用情况复杂，生产力地区差异明显
D.
地区分布不均，保护和开发问题突出
查看完整题目与答案
【判断题】岩浆岩的矿物成分浅色矿物和暗色矿物。
A.
正确
B.
错误
查看完整题目与答案
【简答题】What lessons China can draw from ____global  financial cr has become____hot topic  among us students. A．the;a B．/;a C．a;the D．/;the
查看完整题目与答案
【单选题】— _____ all the students known that our class will visit the museum this weekend? —Yes, every student _____ about it. [     ]
A.
Has; tells
B.
Has; told
C.
Have; was told
D.
Have; were told
查看完整题目与答案
【单选题】我国土地资源的基本特点不包括（ ）。
A.
绝对数量少，人均占有少
B.
类型复杂多样，耕地比重小
C.
利用情况复杂，生产力地区差异明显
D.
地区分布不均，保护和开发问题突出
查看完整题目与答案
相关题目：
【简答题】5h.mp3: Many liberal Democratic voters have become________(4wds) made in Congress, and they will be sorely disappointed if the health care effort fails.
查看完整题目与答案
【单选题】下列哪个不是按照岩浆岩矿物成分划分的类别
A.
原生矿物
B.
他生矿物
C.
自生矿物
D.
次生矿物
查看完整题目与答案
【简答题】我国土地资源的利用和保护情况
查看完整题目与答案
【简答题】In my opinion, all Mr Tom______ good to his students in his class at present. He is very strict in theirstudy. A. doesdoes does    B. does do do C. doesdoes do      D. did do does
查看完整题目与答案
【单选题】— Have all the students know that our class will visit the factory this afternoon. — Yes, Every student _____ about it. [     ]
A.
have told
B.
have been told
C.
has told
D.
has been told
查看完整题目与答案
【单选题】我国土地资源的基本特点不包括（）。
A.
绝对数量小，人均占有少
B.
类型复杂多样，耕地比重小
C.
利用情况复杂，生产力地区差异明显
D.
地区分布不均，保护和开发问题突出
查看完整题目与答案
【判断题】岩浆岩的矿物成分浅色矿物和暗色矿物。
A.
正确
B.
错误
查看完整题目与答案
【简答题】What lessons China can draw from ____global  financial cr has become____hot topic  among us students. A．the;a B．/;a C．a;the D．/;the
查看完整题目与答案
【单选题】— _____ all the students known that our class will visit the museum this weekend? —Yes, every student _____ about it. [     ]
A.
Has; tells
B.
Has; told
C.
Have; was told
D.
Have; were told
查看完整题目与答案
【单选题】我国土地资源的基本特点不包括（ ）。
A.
绝对数量少，人均占有少
B.
类型复杂多样，耕地比重小
C.
利用情况复杂，生产力地区差异明显
D.
地区分布不均，保护和开发问题突出
查看完整题目与答案
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