IOC-1200支持的供电类型是（）？A、380V交流电 B、220V交流电 C、24V

试论述供应商的选择步骤。

以镇心安神、清热养血为主要功用的方剂是（）.

A.归脾汤

B.酸枣仁汤

C.朱砂安神丸

D.当归六黄汤

E.天王补心丹

项目管理公司是项目融资中的重要参加者，其主要任务是( )。

A．项目发起阶段的可行性研究

B．提出一个能够最大限度地保证投资者收益，同时又能为银行及其他利益相关方接受的融资方案

C．项目建设阶段的质量、成本、工期控制

D．项目的日常经营管理事务

我国的小麦主要分布在（　　）

A．东部季风区

B．秦岭-淮河以南

C．秦岭-淮河以北

D．西南地区

阅读理解。

     Motorists who used to listen to the radio or their favorite tunes on CDs may have a new way to

entertain themselves, after engineers in Japan developed a musical road surface.

      A team from the Hokkaido Industrial Research Institute has built a number of "melody roads",

which use cars as tuning forks(音叉)to play music as they travel.

     The concept works by using grooves(凹槽)．They are cut at very specific intervals in the road

surface. The melody road uses the spaces between to create different notes.

      Depending on how far apart the grooves are, a car moving over them will produce a series of

high or low notes, and designers are able to create a distinct tune.

      Patent documents for the design describe it as notches(刻痕)"formed in a road surface so as

to play a melody without producing simple sound or rhythm and reproduce melodylike tones"．

      There are three musical strips in central and northern Japan-one of which plays the tune of a

Japanese pop song. Reports say the system was invented by Shizuo Shinoda.He scraped some

markings into a road with a bulldozer(推土机)before driving over them and found that they helped

to produce all kinds of tones.

     The optimal speed for melody road is 44 kph,but people say it is not always easy to get the

intended sound.

      "You need to keep the car windows closed to hear well,"wrote one Japanese blogger."Driving

too fast will sound like playing fast forward, while driving around 12 mph[20 km/h]has a slowmotion

effect, making you almost carsick."

1.According to the passage,melody roads use________to create different notes.

A．cars  

B．grooves

C．spaces between intervals  

D．bulldozers

2．We can learn from the passage that the highness of notes is depended on________.

A．how far the grooves are

B．how big the grooves are

C．the number of the grooves

D．the speed of the car

3．The underlined word "optimal" in the passage might mean________.

A．fastest  

B．possible

C．best  

D．suitable

4．In order to hear the music well,you have to________.

A．drive very fast

B．drive slowly

C．open the windows wide

D．keep the windows closed

5．What's the best title of the passage?

A．A New Type of Music

B．Melody Roads in Japan

C．A Musical Road Surface

D．A New Invention in Japan