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问题 单项选择题

大型锅炉的汽包吊装多数采用( )方法。

A．水平起吊
B．倾斜起吊
C．转动起吊
D．垂直起吊

答案

参考答案：B

解析： 汽包的吊装有水平起吊、转动起吊和倾斜起吊三种方法。大型锅炉的汽包吊装多数采用倾斜起吊。

完形填空

A. Ming是一位与你年纪相仿的中学生，最近他有了许多烦恼，于是写信向校园杂志的“烦恼我来听”栏目求助。请你根据短文内容和汉语提示完成这封信。每空限填一词。           

Dear editor,

I’m a boy of 15 years old. I have lots of problems these days. I need your help.

First, I have  小题1:     (困难) learning English. I think I’ve tried my best, but it’s just a ____小题2:_ _(浪费) of time. I’m ____小题3:__(害怕) of speaking in front of a group. I often make ____小题4:__ (错误). It seems that I’m so____小题5:_  (愚蠢). Second, I __小题6:_ (将…看做) Jim as my best friend all the time, but I had an argument with him yesterday. As a result I   小题7: (失去) my friendship. Third, after my father’s ___小题8:__ (死)three years ago, I couldn’t get on well with my mother. I don’t think she is ____小题9:_(耐心)enough to pay more attention to me.

I don’t know how to ____小题10:__ _(处理)with all these things. Could you help me?

Yours,

Ming
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单项选择题

不影响散剂混合质量因素的是

A．含易吸湿性成分

B．组分的吸湿性与带电性

C．组分的比例

D．各组分的色泽

E．组分的堆密度
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