更换滑动轴承时，对轴颈与轴承的接触面有何要求？

任务型阅读。

阅读下文并回答问题。

People eat different things in different parts of the world. In the south of China people eat rice every day. Sometimes they eat it two or three times a day, for breakfast, lunch or dinner. They usually eat it with fish, meat and vegetables.

In Africa, maize(玉米) is the most important food. People there make maize into flour(面粉). From this flour they make different kinds of bread and cakes.

In western(西方) countries, such as in Britain, and in the USA, the most important food is bread and potatoes. People there usually make bread from wheat flour. They cook potatoes in different ways. In England the most popular food is fish and chips. They eat it at their workplace, in the park or even on the road. People call it “take-away” food.

小题1:What do people in the south of China eat every day?

小题2:Do the people in Africa make bread and cakes from maize flour?

小题3:What is the most important food in western countries?

（8分）用锌棒、石墨和CuCl₂溶液组成的原电池，锌棒为_    __极，电极反应式为________  _，石墨为_  __极，电极反应式为______，原电池反应的离子方程式为___________  。

通常，鼠标器与PC连接的接口是()。

A．LPT1

B．Centronics

C．LPT2

D．COM1

在信贷尽职监督检查中，以下不属于信贷管理部门职责的是（）。

A．监督、指导信贷管理部门相关法律法规、监管规定和内部规章制度、规范性文件的执行，以及各级行信贷业务经营管理活动的合规开展

B．监督、落实内外部信贷业务监督检查发现问题的整改

C．对尽职监督发现的违规责任人员移送相关部门处理

D．对尽职监督发现的违规责任人员进行处分

下列哪项不是普通感冒的特征（）

A.恶寒发热

B.呈流行性

C.头身疼痛

D.鼻塞流涕

E.喷嚏频作