问题 问答题 简答题

30/32路PCM设备的同步,监视,对告码组是如何安排的?

答案

参考答案:

同步码:帧同步码共7位“0011011”,安排在偶帧TS0的a2~a8码位

监视码:区分奇偶帧的监视码为1位“1”,安排在奇帧TS0的a2码位.

对告码:帧失步对告码安排在奇帧TS0的a3码位,失步用“1”表示,同步用“0”表示。

阅读理解

阅读理解。

     Use your American Express Card to enjoy one-day privileges at four of America's greatest museums.

Note the participating museums, and their exciting special exhibitions that you will not want to miss, listed

below.

     Boston

     Isabella Stewart Gardner Museum

     Chairs

     February 11-May 8, 2005

     Italian furniture expert Fausto Calderai and Indian photographer Dayanita Singh present an exhibition of

chairs from the museum's collection and"chair photographs" from around the world presented in a

Venetian-style hall housing world-famous masterpieces.

     For more information: www.gardnermuseum.org

     New York

     The Noguchi Museum

     Noguchi and Graham

      December 1, 2004-May 1, 2005

     Noguchi's long-term collaboration with dancer Martha Graham is regarded by many as a high point in the

history of both modern dance and art. The exhibition highlights nine of the sets created through this

collaboration.

     For more information: www.noguchi.org

     Philadelphia

     Pennsylvania Academy of the Fine Arts

     In full View: American Painting(1720-2005)

     January 11-April 10, 2005

     Founded in 1805, the Pennsylvania Academy has been home to America's artists for 200 years. The

 Academy collects and exhibits the works of famous American artists, and is well-known for training fine

artists. 2005 at the Academy begins with the largest exhibition of Academy's distinguished American collection

in the institution's history. For more information: www.pafa.org Seattle Seattle Museum of Glass Murano:

Glass from the Olnick Spanu Collection Through November 7, 2004 This exhibition includes over 200 pieces

of beautiful glass from Murano, the island of glassblowers near Venice, Italy. Watch live glass-blowing shows

in the How Shop and see other modern glass exhibitions.

     For more information: www.museumofglass.org

1. Which of the following websites offers information about the furniture show?

A. www.pafa.org

B. www. Museumofglass.org

C. www.noguchi.org

D. www. Gardnermuseum.org

2. We learn from the text that Martha Graham is _______.

A. a dancer

B. a glassblower

C. a painter

D. a photographer

3. If you want to know the history of American painting, you may visit ______.

A. the Noguchi Museum

B. Seattle Museum of Glass

C. Isabella Stewart Gardner Museum

D. Pennsylvania Academy of the fine Arts

单项选择题 A1/A2型题