皮皮学，免费搜题
登录
搜题
【简答题】
用含Cu 2 S的铜矿冶炼铜有多种方法。其中之一是： (1)先通入空气将矿石高温煅烧，生成两种氧化物； (2)将煅烧所得的固体氧化物加上和它质量相同的未经煅烧过的矿石，混会均匀后隔绝空气再进行高温煅烧，结果得到和一种有刺激性气味的气体。 写出上述反应的化学方程式： (1) __________________________________________________________________； (2) __________________________________________________________________。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】完形填空。 Every day after breakfast, my mother would go to read the paper and my father would wear that old apron(围裙). For the next hour __ 1 __ would do the dishes, singing songs. I thought it was strang...
【单选题】When asked by news reporters, the film star of stage and screen ________ that he would pay a visit to Europe next week.(2012· 山东岚山一中月考)
A.
identified
B.
proposed
C.
approved
D.
confirmed
【单选题】The shocking news made me realize ________ terrible problems we would face.(2011·北京)
A.
what
B.
how
C.
that
D.
why
【单选题】In the eighteenth century, writers ______ hours in coffee houses, discussing the news of the day.
A.
used to spending
B.
would be spending
C.
used to spend
D.
were used to spend
【单选题】In the eighteenth century, Writers ______ hours in coffee houses, discussing the news of the day.
A.
used to spending
B.
would be spending
C.
used to spend
D.
were used to spend
相关题目：