为促使凝集现象的出现,下列措施中哪项是错误的()
A.离心使复合物沉淀
B.降低试剂的粘滞度
C.用胰酶或神经氨酸酶处理
D.适合pH
E.电解质含量适当
参考答案:B
—The terrible flood in August brought about $10 million in losses to the island country.
—________.[ ]
A. Quite OK
B. Certainly
C. That's the case
D. I agree
踱步duó bù