在车间一般只允许使用电压为( )的行灯。A.45V B.60V C.36V D.1

题型:单项选择题

问题:

在车间一般只允许使用电压为( )的行灯。

A.45V

B.60V

C.36V

D.18V

考点:涂装工初级涂装工初级
题型:单项选择题

阅读理解

     Mr Green is from England. He and his wife(妻子)are teachers. They teach English in Beijing.

They have a boy and a girl. They are Jack and Mary. Jack is a student, but Mary is not . She is only

four.They  have two bikes. One is big, and the other is small. The big one is for Jack. The small one is for Mary.  On Sundays, sometimes they are at home, sometimes they go to the park. The Greens like China. They have a lot of Chinese friends

1. Where are the Greens now? They are in _____.  

A. China

B. America

C. England  

D. Japan

2. What do Mr and Mrs Green do? They _____.

A. study Chinese    

B. teach English  

C. look after Jack and Mary  

D. go to the park

3. What do Jack and Mary have? They have _____.  

A. cars  

B. watches  

C. clocks  

D. bikes

4. On Sundays, they are sometimes  _____.

A. at school

B. in the classroom

C. at home

D. on the bike

5. Mr and Mrs Green _____.

A. have many Japanese friends  

B. like China very much

C. look the same  

D. don’t know Chinese

题型:单项选择题

已知y是x的一次函数,下表列出了部分对应值,则m=()。

题型:单项选择题

鼻腔静脉回流中,最后汇人颈内、外静脉的静脉是

A.鼻腔前部、中部和下部的静脉

B.鼻腔前部、后部和下部的静脉

C.鼻腔后部、前部和中部的静脉

D.鼻腔中部、后部和下部的静脉

E.鼻腔中部、后部和上部的静脉

题型:单项选择题

引起口腔黏膜创伤性损害的因素包括

A.机械、理化刺激

B.微生物感染

C.特殊解剖结构

D.过敏反应

E.营养缺乏

题型:单项选择题

关于TD-SCDMA标准的演进,正确的说法是()

A.3GPPRelease99中加入了TD-SCDMA。

B.3GPPReleaseR4中加入了TD-SCDMA

C.3GPPReleaseR5中加入了TD-HSDPA

D.3GPPReleaseR6中加入了TD-MBMS

E.3GPPReleaseR7中加入了TD-HSUPA

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