logo - 刷刷题
下载APP
【单选题】

( )是采用天然矿石如石英砂、石灰石等,配以其他化工原料如纯碱、硼酸等粉状玻璃原料,在熔炉内经高温熔化,形成棉状材料。

A.
玻璃棉制品
B.
泡沫玻璃制品
C.
矿(岩)棉制品
D.
硬质聚氨酯泡沫塑料
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】When stars like our Sun die, they bloat to become red giants and then eject gigantic clouds of gas and dust into space. Increasingly, however, scientists found themselves at a profound loss to explain...

A.
explain-the possible way of death of our Sun.
B.
show the two types of red giants.
C.
discuss on the way of red giants to become white dwarfs.
D.
explore the origin of life.