焦油加工的主要任务是获得酚、萘、蒽等纯产品和()等粗产品。

题型:填空题

问题:

焦油加工的主要任务是获得酚、萘、蒽等纯产品和()等粗产品。

考点:蒸馏工考试高级蒸馏工高级蒸馏工题库
题型:填空题

如图,△AOB是由△A1O1B1平移后得到的,已知点A的坐标为(2,-2),点B的坐标为(-4,2),若点A1的坐标为(3,-1)。

求:(1)O1的坐标为 _________ ,B1的坐标为 _________ ;

(2)△AOB的面积为 _________ (填上正确答案即可)。

题型:填空题

Part 2


·Your manager is keen to introduce new practices into your company. He has asked you to write a report which includes details of two practices .from another company which you would suggest adopting in your own company.
☆ Write the report for your manager, including the following information.
☆ What you admire about the other company.
☆ Which two of its practices you would adopt.
☆ Why your company would benefit from them.
·Write in your own words; do not copy what you read here.

题型:填空题

进行停、送电操作时,在手车式开关拉出、推入前,必须检查开关确在分闸位置,此检查项目应填入操作票内。( )

题型:填空题

( )方法不可除碱。

A.钠离子交换后加酸处理
B.氢-钠离子交换
C.氢-氧离子交换
D.石灰软化除碱

题型:填空题

下列情况不会发生Change事件的是( )。

A.当文本框的文本部分更改时

B.从选项卡控件中从一页移到另一页时

C.向组合框中添加一个新列时

D.更改组合框下拉列表的选择时

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