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问题 单项选择题

AD428/508机器在长时间复印后，屏幕上提示“正在自动补粉”，接着便出现代码C2804导致故障的原因是（）

A.TCR传感器损坏

B.机器主控板损坏

C.补粉马达损坏

D.补粉电磁铁弹簧弹力不够

答案

参考答案：D

改错题

短文改错（共10小题；每小题1分，满分10分）

短文中共有10处语言错误。错误涉及到添加、删除或修改。

添加：在缺词处加符号Λ，并在其下面写出该加的词。删除：把多余的词用／划掉

修改：在错词下面划个横线，并在该词下面写出修改后的词。

Attention please, everyone!

About 50 students from American will come to our school for the visit on October 4th,

Sunday. Our class will greet them. We will meet at the school gate at 8:40 am and giving them a

warm welcome. They will arrive at 9:00 am, and then we will show the American students to the

schoolyard, the lab building or the teaching building. There will have a friendly basketball game

on the playground at 10:00. we will leave our schools at 11:00. We should polite to our guests

and talk with them in the English.

That’s all. Thank you.
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单项选择题

厕浴间和有防水要求的楼板四周除门洞外，应作混凝土翻边，其高度不应小于（）mm。

A.100

B.150

C.120

D.140
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