常用的分度头有FW100、()、FW160等几种.A、FW110    B、FW12

题型:单项选择题

问题:

常用的分度头有FW100、()、FW160等几种.

A、FW110   

B、FW120  

C、FW125  

D、FW140

考点:中级钳工中级钳工题库
题型:单项选择题

What are you going to do if you are in a burning house? How will you escape? Do you know how to save yourself? Please read the following passage.

Escaping a fire is a serious matter.Knowing what to do during a fire can save your life.It is important to know the ways you can use and show them to everyone in the family,such as stairways and fire escapes,but not lifts.

From the lower floors of the buildings,escaping through windows is possible,learn the best way of leaving by windows with the least chance of serious injury.

The second floor window is usually not very high from the ground.An average(平均高度的)person,hanging by the finger-tips will have a drop of about six feet to the ground.It is about the height of an average man.Of course,it is safer to jump a short way than to stay in a burning building.

Windows are also useful when you are waiting for help.Be sure to keep the door closed.Or smoke and fire may be drawn into the room.Keep your head low at the window to be sure you get fresh air rather than smoke that may leaked(渗)into the room.

On a second or third floor,the best windows for escaping are those that open onto a roof.From the roof a person can drop to the ground more safely.Dropping onto cement(水泥)might end in injury.Bushes(灌木丛)and grass can help to break a fall.

小题1:It is important to _______.

A.put out the fire in the burning house

B.know the ways to escape the fire

C.jump off a burning house

D.keep the door closed小题2:It is possible to escape through the windows _______.

A.if there are some bushes on the ground

B.if you are strong enough

C.if you live on a lower floor

D.If you have a long rope小题3:Which of the following escaping way is NOT right? _______.

A.You can escape through stairways.

B.You can choose fire escapes.

C.Escape from the windows that open onto a roof.

D.Use a lift to come down at once.小题4:Open the window so that _______ if the building is on fire.

A.you can get fresh air

B.you can call for help

C.you can easily jump off

D.you can be seen first小题5:The best title of the passage is _______.

A.Escaping from the Windows

B.Save Yourself in the Burning House

C.Knowledge on Fire

D.Waiting for Help

题型:单项选择题

某排水管道工程采用承插式混凝土管道,管座为180°;地基为湿陷性黄土,工程沿线范围内有一排高压输电线路。项目部的施工组织设计确定采用机械从上游向下游开挖沟槽,用起重机下管、安管,安管时管道承口背向施工方向。
开挖正值雨季,为加快施工进度,机械开挖至槽底高程。由于控制不当,局部超挖达200mm,施工单位自行进行了槽底处理。
管座施工采用分层浇筑。施工时,对第一次施工的平基表面压光、抹面,达到强度后进行二次浇筑。
项目部考虑工期紧,对已完成的主干管道边回填、边做闭水试验,闭水试验在灌满水后12h进行;对暂时不接支线的管道预留孔未进行处理。
问题

在本工程施工环境条件下,挖土机和起重机安全施工应注意什么

题型:单项选择题

苏合香丸的功能是()

A.清热解毒

B.镇惊安神

C.行气止痛

D.祛风止痒

E.活血止痛

题型:单项选择题

在数据管理技术的发展过程中,经历了人工管理阶段、文件系统阶段和数据库系统阶段。
其中数据独立性最高的阶段是 ______。

A.数据库系统

B.文件系统

C.人工管理

D.数据项管理

题型:单项选择题

起下巾73mm的平式油管时,应选用公称尺寸()mm的BD76/585型油管吊卡。

A.50

B.73

C.79

D.89

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