不含乳酸菌的含乳饮料/乳味饮料需用1M氢氧化钠将样品pH值调至（）。A、6.5-7.

在空气中冷却，能降低金属硬度，细化晶粒，提高塑性，改善性能（）

A.退火

B.再结晶

C.正火

D.淬火

E.铸造

根据句意及汉语提示完成句子。

1.The two old people have been ____ (已婚的) for 20 years, and they are a couple.

2.He is my ____ (年龄大的) brother. He is two years older than me.

3.Today it is ____ (正常的) for married women to go out to work.

4. Mobile phones are ____ (广泛地) used in most of  the cities in China.

5. My mother was always cooking for us. Looking after us was her ____ (全职的) job.

6.The ____(夫妇) fall in love with each other.

补体经典途径中活化的C3转化酶是（）

A.C1

B.C5678

C.C

D.C

E.C

凡是具备相对独立完成会计数据输入、处理和输出功能模块的软件，均可视为会计核算软件。

微粉流速反映的是（）

A.微粉的润湿性

B.微粉的粒密度

C.微粉的空隙度

D.微粉的流动性

E.微粉的比表面