铜的熔点是(),工业常用的是紫铜、青铜、黄铜。
参考答案:1083℃
----The 2011 College Entrance Examination has just been over!
----Yes, it will be about two years _____we attend it.
A.until
B.before
C.after
D.since
财产股息是股份公司用()作为股息分派给股东。
A、公司财产
B、现金
C、股票
D、现金以外的其他财产