题目:
下列选项中,()是技术改造的有关步骤。
A、前期准备
B、检修阶段
C、验收阶段
D、实施阶段
答案:
参考答案:A, C, D
下列选项中,()是技术改造的有关步骤。
A、前期准备
B、检修阶段
C、验收阶段
D、实施阶段
参考答案:A, C, D
最早显示胎盘的时间为()
A.第5~7孕周
B.第7~12孕周
C.第20~28孕周
D.第14~22周
E.8周后
阅读理解。
Step into Pat Lundin's home and you'll be greeted by 500 smiling faces of dolls. Lundin, 82, describes
herself as "doll crazy". And she's not alone.
As a member of Timeless Treasures Doll Club of Largo, she frequently meets with 25 other women who
share her hobby. Once a month, they gather at the Palms of Largo to show off their latest finds and catch
up on news in the world of doll collecting.
On Saturday, the club will hold the Palms of Largo Fifth Annual Doll Show. The program will include 37
vendors (卖主) with both classic and contemporary dolls for sale.
"Timeless Treasures is a club that's open to doll lovers regardless of the age of the doll," said Judy Smith,
president of the organization."Some doll clubs require members have a certain number of antique dolls, but we
don't. we make sure we are not terribly formal."
Smith, 71, is a retired schoolteacher who owns Judy's Doll Hospital, a part-time business she operates out
of her home. She will have a table offering repair and appraisal (鉴定) services. Smith firs began studying and
collecting dolls in her early 20s,in Glassboro, New Jersey, she does not know how many dolls she owns, or
how many repairs she has made over the years. But she does know the age of her oldest doll.
"She's 129," Smith said."It is a German-made doll that belonged to my grandmother, and it sits in my living
room."
The show is for both the beginner as well as the experienced collector, said Anita Munson, one of the
show's organizers.
Over the years, Munson, 82, has learned how to identify a valuable doll. "Generally speaking porcelain
(瓷制的) dolls are the most valuable," she said. "But the porcelain will not be shiny."
Smith believes many people will attend to find out how much their dolls are worth. She wants them to
know more.
"Because the dolls reflect what the children were wearing and doing at a particular period of time, they can
be a great history lesson for children now," she said.
1. According to the passage, Timeless Treasures is _____.
A. a club for doll lovers
B. a company selling dolls
C. a group of retired teachers
D. an organization repairing toys
2. We can infer that the show has been held _____.
A. twice
B. four times
C. six times
D. eight times
3.What can we learn about Smith?
A. She owns the oldest doll in the world
B. She has collected about five hundred dolls
C. She has studied dolls for about fifty years
D. She worked as a businesswoman before retirement
4. Smith wants people to know _____.
A. porcelain dolls are not valuable
B. collecting dolls is a way to make money
C. dolls have nothing to do with tradition
D. dolls may help children learn about history
5. The passage is written mainly to _____.
A. describe the colorful life of a group of elderly women
B. explain why some people like collecting old dolls
C. introduce a recent doll show and its host organization
D. offer knowledge and experience about doll collecting
要有效地发射电磁波,振荡电路必须具有两个特点:第一,要有______的振荡频率,频率越高,发射电磁波的本领越大.第二,应采用______,振荡电路的电场和磁场必须分散到尽可能大的空间.实际应用中的开放电路,线圈的一端用导线与大地相连,这条导线叫做______,线圈的另一端与高高地架在空中的______相连.
根据我国相关法律的规定,只能由法律加以设定的行政处罚是()
A.责令停产停业
B.罚款
C.限制人身自由
D.没收违法所得
女,39岁,面部红斑、水肿、瘙痒3天。发病前面部曾外用“祛皱霜”,考虑为接触性皮炎。拟查致敏物应做
A.划痕试验
B.活组织检查
C.皮内试验
D.斑贴试验
E.Kveim试验