矿物的摩氏硬度,其石英的硬度为(),金刚石的硬度为()。
参考答案:7;10
— Were you caught in the heavy rain this morning?
— Yes, I was. _______ had I left home than it began to rain dogs and cats.
A.No sooner
B.Seldom
C.Hardly
D.Never
引起血管内溶血的疾病是()
A.地中海贫血
B.脾功能亢进
C.遗传性球形细胞增多症
D.异常血红蛋白病
E.阵发性睡眠性血红蛋白尿(PNH)