抗-DNP-OVA+DNP-OVA ()
A.适量沉淀(+)
B.大量沉淀(+++)
C.没有沉淀(-)
D.出现凝聚
E.不出现凝聚
参考答案:B
白茅花功效与作用
He__________a good knowledge of Chinese history. You can ask him about the ancient China. [ ]
A. conducts
B. controls
C. contains
D. commands