金属风管支吊架安装时吊杆距风管末端不应大于多少?
参考答案:金属风管支吊架安装时吊杆距风管末端不应大于1000mm。
60℃时,有等质量的两份饱和Ca(OH)2溶液,其中一份冷却至10℃得溶液甲;另一份加入少量的生石灰后,恢复温度至60℃得溶液乙.则甲、乙两溶液相同的是( )
A.溶液的质量
B.Ca(OH)2溶解度
C.溶质的质量分数
D.都是饱和溶液
Both the teammates of the former and present football clubs of Beckham were amazed when they discovered his behavior. True False