加工贸易企业在从事加工复出业务过程中剩余的可以继续用于加工制

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问题单项选择题

加工贸易企业在从事加工复出业务过程中剩余的可以继续用于加工制成品的加工贸易进口料件，称为( )。

A．剩余料件

B．边角料

C．残次品

D．副产品

答案

参考答案：A

句型转换

根据括号内的要求，改写下列句子。

1. My parents should allow me to study with friends.（改为同义句）

I should _________ _________ to study with friends.

2. They often clean their classroom after school. （改为被动语态）

Their classroom _________ often _________ by them after school.

3. Li Lei gave Tom a new pen last week. （改为被动语态）

A new pen __________ Tom last week.

4. It took him ten years to finish writing the book.（改为同义句）

He _________ ten years __________ the book.

5. They will publish these story-books next month.（改为被动语态）

These story-books __________ next month.

问答题简答题

硫酸露点腐蚀是如何产生的？