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【单选题】
商朝工匠有很高的青铜冶炼技术。青铜的主要成分是____
A.
铜
B.
铜、锡、铅
C.
铜、铁
D.
铜、银、铅
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举一反三
【单选题】关于锰结核的冶炼技术，下述哪些说法不正确？（）
A.
第一代冶炼技术是沿用陆地红土矿的处理技术；
B.
第二代冶炼技术的基本思想是通过还原的方式破坏锰结核中的矿物结构，从而使赋存于其中的镍、钴、铜等有价
C.
金属解离出来便于处理；
D.
亚铜离子氨浸法是锰结核处理的第二代冶炼技术；
E.
高温高压硫酸浸出法是锰结核处理的第二代冶炼技术
【单选题】E Reading is not the only way to gain knowledge of the work in the past. There is another large. reservoir which may be called experience, and the college students will find, that every ...
A.
The college students have trouble separating good plants from wild grass.
B.
Craftsmen’s experience is usually unscientific.
C.
Craftsmen don’t like teaching the contemptuous (傲慢的) college students.
D.
Traditional practices are as important as experience for the college students.
相关题目：
【单选题】关于锰结核的冶炼技术，下述哪些说法不正确？（）
A.
第一代冶炼技术是沿用陆地红土矿的处理技术；
B.
第二代冶炼技术的基本思想是通过还原的方式破坏锰结核中的矿物结构，从而使赋存于其中的镍、钴、铜等有价
C.
金属解离出来便于处理；
D.
亚铜离子氨浸法是锰结核处理的第二代冶炼技术；
E.
高温高压硫酸浸出法是锰结核处理的第二代冶炼技术
【单选题】E Reading is not the only way to gain knowledge of the work in the past. There is another large. reservoir which may be called experience, and the college students will find, that every ...
A.
The college students have trouble separating good plants from wild grass.
B.
Craftsmen’s experience is usually unscientific.
C.
Craftsmen don’t like teaching the contemptuous (傲慢的) college students.
D.
Traditional practices are as important as experience for the college students.
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