银行在为客户办理出口押汇业务时，应与客户签订（） A.出口押汇业务总承诺书 B.出口

《药品经营许可证管理办法》适用于《药品经营许可证》的

A．验收

B．发证

C．换证

D．监督管理

E．变更

某国劳动部门正在讨论本国的失业问题。官员甲指出，尽管从失业率数据看，本国的失业状况并不是很严峻，但是有一部分失业者的失业时间已经达到或超过一年，这部分人的就业难度非常大，同时在劳动力总人口中所占的比例也值得警惕。官员乙指出，目前国家应当重点做好两个方面的工作：一是强化公共就业服务，为企业和劳动者提供准确而清晰的劳动力市场供求信息，缩短劳动力供求双方之间的相互搜寻过程，尽快实现就业；同时，加强对失业者的培训工作，以使劳动者掌握当前市场需要的知识和技能，更好地实现就业。二是为当前以及未来的劳动者提供更好的职业指导以及职业供求预测，引导劳动者根据未来的市场需求状况确定目前投资于何种知识和技能，从而在未来更容易实现供求匹配。根据以上资料，回答下列问题：

官员甲提到的这种失业者在劳动力总人口中所占的比重称为（）。

A.短期失业率

B.中期失业率

C.长期失业率

D.特殊失业率

Teaching and research are supported by the University’s extensive collections—the Yale University Art Gallery, the Yale Center for British Art, the Peabody Museum of Natural History, and the Collection of Musical Instruments. All the collections are open to the public.

Yale University Art Gallery

The Yale University Art Gallery, founded in 1832, today houses a collection that has grown to rank with those of the major public art museums in the United States. Its two connected buildings house ancient, medieval, and Renaissance art, Near and Far Eastern art, archaeological material from the University’s excavations (古迹), Pre-Columbian and African art, works of European and American masters from actually every period, and a rich collection of modern art. Across the street, the Yale Center for British Art, which was opened in 1977, holds the largest collection of British art and illustrated books anywhere outside the United Kingdom.

Peabody Museum of Natural History

Yale’s Peabody Museum of Natural History, founded in 1866, contains one of the great scientific collections in North America. Among its holdings are the University’s comprehensive mineralogical and ornithological collections, the second-largest repository of dinosaur artifacts in the United States, and the largest undamaged Apatosaurus (Brontosaurus 雷龙) in the world. The Peabody is truly a working museum, where public exhibition, research, conservation, teaching, and learning intersect (贯穿).

Yale Center for British Art

Institutions like the Art Gallery, the Center for British Art, and the Peabody Museum hold only a portion of the treasures in the University’s collections. From paintings by Picasso, to pterodactyl (翼龙) remains, to a 1689 tenor viol in the Collection of Musical Instruments, Yale’s possessions are meant to be accessible to the communities they enrich.

Collection of Musical Instruments

Exhibitions are also frequently mounted (裱贴) at the following venues on campus: Art + Architecture Gallery (School of Architecture), Beinecke Rare Book and Manuscript Library, Green Hall Gallery (School of Art), and Sterling Memorial Library, including the Arts of the Book Collection.

小题1:Which of the following cannot be found in the Yale University Art Gallery?

A．Near and Far Eastern art.

B．Pre-Columbian and African art

C．British art and illustrated books.

D．Works of European and American masters.小题2:Where will you go if you want to enjoy dinosaur artifacts?

A．Peabody Museum of Natural History.

B．Collection of Musical Instruments.

C．Yale University Art Gallery.

D．Yale Center for British Art.小题3:Which of the following has the longest history according to the passage?

A．Yale Center for British Art.

B．Yale University Art Gallery.

C．Peabody Museum of Natural History.

D．A musical instrument named tenor viol.小题4:We can learn from the passage that in Yale, ______.

A．collections are partly open to the public

B．there are many venues just for exhibitions

C．collections are from art museums in the US

D．exhibitions are frequently mounted on campus小题5:What is the text mainly about?

A．Introduction to Yale University.

B．Introduction to collections in Yale.

C．Introduction to venues in Yale.

D．Introduction to art works in Yale.

燃烧1 g乙炔生成二氧化碳和液态水，放出热量50 kJ，则这一反应的热化学反应方程式为    （   ）

A．2C₂H₂(g)+5O₂(g)====4CO₂(g)+2H₂O(l)；ΔH="+50" kJ·mol^-1

B．C₂H₂(g)+5/2O₂(g)====2CO₂(g)+H₂O；ΔH="-1" 300 kJ

C．2C₂H₂+5O₂====4CO₂+2H₂O；ΔH="-2" 600 kJ

D．2C₂H₂(g)+5O₂(g)====4CO₂(g)+2H₂O(l)；ΔH="-2" 600 kJ·mol^-1

稳定扩散（稳态扩散）是指在垂直扩散方向的任一平面上，单位时间内通过该平面单位面积的粒子数（）。

A.随时间而变化

B.不随时间而变化

C.随位置而变化

D.A或B