ZD6-A型电动转辙机的转换时间（指大动程）为（）。.A.不大于3.8s B.等于3

牙钳的使用下述何种方法是错误的()

A．正确选用牙钳

B．钳喙的纵轴与牙长轴平行

C．安放好牙钳再次核对牙位及避免损伤到邻牙

D．安放时钳喙内侧凹面紧贴牙面

E．安放时钳喙先放唇颊侧、再放舌腭侧

下列哪项不是生物体的性状？          （    ）

A．生物体的形态结构特征

B．生物体的生理特征

C．生物体的行为方式

D．生物体的生殖发育方式

某工程施工总承包合同工期为20个月。在工程开工之前，总承包单位向总监理工程师提交了施工总进度计划，各工作均匀进行(图7-2)。该计划得到总监理工程师的批准。当工程进行到第7个月末时，进度检查绘出的实际进度前锋线如图7-2所示、E工作和F工作于第10个月末完成以后，业主决定对K工作进行设计变更，变更设计图纸于第13个月末完成。

工程进行到第12个月末，进度检查时发现：

(1)H工作刚刚开始。

(2)I工作仅完成了1个月的工作量。

(3)J工作和G工作刚刚完成。

为了保证本工程的建设工期，在施工总进度计划中应重点控制哪些工作

Like every other Olympics, the London 2012 Olympics will depend upon thousands of volunteers to help with the smooth running of the event. To show the importance of the role, London 2012 volunteers are to be called ‘Game Makers’. Lord Coe has said recently: “London 2012 is relying on brilliant Game Makers to help us create a great Olympic and Paralympic Games. ”

London 2012 Olympics volunteers will provide the face of London 2012, working behind the scenes and making sure the games are as well organized, efficient and, most importantly, as enjoyable as possible.

Despite the hard-work and often unsociable hours required of volunteers, applications to be considered as a Game Maker were unprecedented（空前的） with all the 70, 000 available positions applied within days. But, for those still interested in helping out during 2012 and being in the middle of the action, there are still a lot of opportunities available.    

If you were one of those who missed out on the chance of becoming London 2012 volunteers, you can now apply to be one of the 8, 000 London Ambassadors（大使）. This important role involves greeting fans from all over the world, welcoming them to the fantastic capital city of London and providing a friendly face as well as help, advice and a good old traditional warm British welcome. The view of London most visitors take away with them after the 2012 Olympics will mostly be down to the volunteers and ambassadors, so these roles play a very important part in the process of making the UK a great place to travel to.    

Becoming a London Ambassador is a brilliant way to be involved with the London 2012 volunteers scheme and become a part of what should be an historic summer.

小题1:Why are London 2012 volunteers called “Game Makers”?

A．They’ll decide whether the London 2012 Olympics are a success.

B．They play an important role in the London 2012 Olympics.

C．The London 2012 Olympics won’t be organized without them.

D．They will work hard and effectively.小题2:Which of the following can replace the underlined part “be down to” in Paragraph 4?

A．be the responsibility of

B．be under the control of

C．be in harmony with

D．be in charge of小题3:What’s the purpose of the passage?

A．To appeal to more volunteers.

B．To introduce the London 2012 Olympics.

C．To show the importance of volunteers.

D．To guide how to spend the historic summer.

化学消毒灭菌法不包括（）

A.浸泡法

B.喷雾法

C.擦拭法

D.清洗法

E.熏蒸法