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问题 多项选择题

施工机械的走合期保养是指机械在走合期内和走合期完成后的保养，内容是（）。

A.加强检查

B.提前更换润滑油

C.注意分析油质

D.了解机械的磨合情况

答案

参考答案：A, B, C, D

阅读理解

In many English homes people eat four meals a day: breakfast, lunch, tea and dinner(主餐).

People have breakfast at any time from seven to nine in the morning. They eat porridge(粥), eggs or bread. English people drink tea or coffee at breakfast.

  

小题1:Many English people have        meals a day.

A．two

B．three

C．four

D．three or four小题2:A dinner can be       .

A．breakfast or lunch

B．lunch or tea

C．lunch or supper

D．breakfast or supper小题3:People have breakfast at       .

A．any time

B．eight

C．one

D．five小题4:People don't have        for their dinner.

A．bread

B．bananas and oranges

C．soup

D．meat and fish小题5:Afternoon tea is         .

A．a kind of tea

B．a meal

C．from five to seven in the afternoon

D．before dinner
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选择题

一个单位有员工160人，其中业务人员120人，管理人员16人，后勤人员24人．为了解员工的某种情况，采用分层抽样方法从中抽取一个容量为20的样本，则应抽取业务人员（　　）

A．8人

B．10人

C．12人

D．15人
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