木门框安装下脚应嵌入地坪内一定深度,楼面立框入地50mm。

题型:判断题

问题:

木门框安装下脚应嵌入地坪内一定深度,楼面立框入地50mm。

考点:木工高级技师木工高级技师
题型:判断题

下列叙述,正确的是[ ]

A.现在,世界上绝大部分国家之间都有明确的国界线  

B.发展中国家全部分布在南半球  

C.目前,工农业生产现代化程度较高的发达国家有150多个

D.发展中国家主要分布在欧洲、北美洲、大洋

题型:判断题

图表示几种自然灾害的持续时间。则①②③④四种灾害分别是

A.火山、地震、干旱、洪涝

B.地震、火山、洪涝、干旱

C.干旱、洪涝、地震、火山

D.火山、地震、洪涝、干旱

题型:判断题

There are stories about two US Presidents,Andrew Jackson and Martin Van Buren,which attempt to explain the American English term OK. We don't know if either story is true,but they are both interesting.

The first explanation is based on the fact that President Jackson had very little education. In fact,he had difficulty reading and writing. When important papers came to Jackson,he tried to read them and then had his assistants explain what they said. If he approved of a paper, he would write “all correct” on it. The problem was that he didn't know how to spell. So what he really wrote was “ol korekt”. After a while,he shortened that term to “OK”.

The second explanation is based on the place where President Van Buren was born,Kinderhook,New York. Van Buren's friends organized a club to help him become president. They called the club the Old Kinderhook Club,and anyone who supported Van Buren was called “OK”.

小题1:The author ________.

A.believes both of the stories

B.doesn't believe a word of the stories

C.is not sure whether the stories are true

D.is telling the stories just for fun小题2:According to the passage,President Jackson ________.

A.couldn't draw up any documents at all

B.wasn't good at reading,writing or spelling

C. often had his assistants sign documents for him

D.didn't like to read important papers by himself小题3:According to the first story, the term “OK”________.

A.was approved of by President Jackson

B.was the title of some official documents

C.was first used by President Jackson

D.was an old way to spell “all correct”小题4:According to the second story,the term “OK” ________.

A.was the short way to say “Old Kinderhook Club”

B.meant the place where President Van Buren was born

C.was the name of Van Buren's club

D.was used to call Van Buren's supporters in the election

题型:判断题
求如图所示的交变电流的有效值,其中每个周期的后半周期的图象为半个周期的正弦曲线(   )

A.5A

B.5A

C.5/2A

D./2A

题型:判断题

装饰施工机械是指()。

A.各种手持电动工具

B.水磨石机

C.施工升降机

D.各种手持电动工具和小型装饰机械

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