家庭漂白术使用的漂白剂是()
A.30%过氧化氢
B.10%~15%过氧化脲
C.15%过硼酸钠
D.10%~15%过氧化氢
E.30%过氧化脲
参考答案:B
We are designing an experiment to find out whether glass _____ more easily when it is cold. [ ]
A. is broken
B. will be broken
C. breaks
D. will break
各疏水器疏水管接入汇集管的先后次序是怎样的?