正常硫酸钡吸附血浆中含有的主要凝血因子为()
A.因子Ⅰ、Ⅴ、Ⅷ、Ⅺ、Ⅻ
B.因子Ⅸ、Ⅹ、Ⅺ、Ⅻ
C.因子Ⅱ、Ⅶ、Ⅹ
D.因子Ⅶ、Ⅹ
E.因子Ⅺ、Ⅻ
参考答案:A
下列物质中,属于氧化物的是( )
A.H2SO4
B.O2
C.KCl03
D.SO3
You can't put it here. You must _____ the right place.[ ]
A. look at
B. look for
C. look down
D. look up