现需要能输出36V直流电压的直流电源,若采用单相桥式整流,则整流变压器副边电压应为(

题型:单项选择题

问题:

现需要能输出36V直流电压的直流电源,若采用单相桥式整流,则整流变压器副边电压应为()V。

A.32.4

B.40

C.64.8

D.80

考点:水利水电工程第八章电工电子技术第八章电工电子技术题库
题型:单项选择题

我国民法是调整( )的公民之间、法人之间以及公民和法人之间的财产关系和人身关系的法律规范的总称。

A.特殊主体
B.一般主体
C.平等主体
D.财产主体

题型:单项选择题

阅读短文,选择正确答案。

    The mice (老鼠们) are showing off (炫耀) their food.

    Tommy

    In my house I have some eggs, chicken, meat and cakes. I have some milk, flour and sugar, too. But I do not

have any butter. I don't like it.

    Kate

    Look! So many nice things I have! I have cakes, butter, milk, bread and sugar. I also have some meat and

fish. I like fish very much. I have no eggs in my home. I don't like eggs.

    Jimmy

    In my home I have chicken, apples, eggs and sweets. I have some sugar and some milk, too. I like milk very

much, so I'm very strong. I do not have any butter or bread because I don't like them.

    Joan

    I have eggs, chicken, milk and bread. I have cakes, butter and fruit juice, too. I don't like fruit, but I like juice.

So I do not have any fruit.

1. There are              mice altogether (总共). [ ]

A. 2

B. 3

C. 4

D. 5

2.               and              don't have any butter. [ ]

A. Tommy; Kate

B. Kate; Jimmy

C. Kate; Joan

D. Tommy; Jimmy

3.              doesn't like fruit, but juice. [ ]

A. Tommy

B. Kate

C. Jimmy

D. Joan

4. All the mice like             . [ ]

A. chicken

B. milk

C. sugar

D. meat

题型:单项选择题

持续气道正压通气的英文缩写是()

A.PEEP

B.ASV

C.CPAP

D.PRVC

E.APV

题型:单项选择题

工程质量达不到合格标准时,必须及时处理。如果采用全部返工重做的处理方法加以处理者,可评为合格质量等级。()

题型:单项选择题

社会优抚属于社会保障的哪一级别的纲领()

A.最低纲领

B.最高纲领

C.基本纲领

D.特殊纲领

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