局麻药的主要作用机理（） A.阻断Ca2+通道 B.阻断Mg2+通道 C.阻断Cl-

液化石油气站的选址原则之一是要考虑风向，下列各项中正确的是( )。

A．站址应选在所在地全年最大频率风向的上风侧

B．站址应选在所在地全年最大频率风向的下风侧

C．站址应选在所在地全年最小频率风向的上风侧

D．站址应选在所在地全年最小频率风向的下风侧

下列描述不正确的是( )。

A．工业区布局应考虑企业间的生产协作

B．危险品加工企业不宜布置在城市的上风向

C．加工业企业应尽量在市区内集中安排

D．城市水厂不宜安排在流经城市河流的下游

信息匹配

阅读下列应用文及相关信息,并按照要求匹配信息。

首先请阅读下列英语读物的封面及基本信息:

A. National Geographic Complete Birds of the World

LIMITEDTIME OFFER: Order today and save $5.00!

Was: $35.00

Now: $30.00

Hardcover

384 pages；900 color photographs and illustrations

6 7/8"  ?9 3/4"

? 2009

B. Visions of Paradise

National Geographic photographers reveal unique and aweinspiring wonders of nature.

$35.00

Hardcover

304 pages；250 photographs

10 ×11"

? 2008

C. National Geographic Adventure Magazine

Join the adventure with National Geographic Adventure Magazine. Please allow 4～6 weeks for the delivery of the first issue within the U．S. and Canada. For outside of the U．S. and Canada,please allow 8～12 weeks for the delivery of the first issue.

$12.00

D. Cesar's Way:

The Natural,Everyday Guide to Understanding and Correcting Common Dog

Problems

America's most soughtafter expert reveals what dogs truly need to live a happy and fulfilled life.

Was: $24.95

Now: $14.95

Hardcover. 5 3/4" × 8 1/2". 234 pages

? 2006

E. National Geographic Ultimate Field Guide Photography,2nd Edition

Softcover

400 pages；272 color and blackandwhite photographs

7 1/2" ? 9 3/4"

? 2009

Thoroughly updated for 2009,straightforward and entertaining,this is the ultimate source for people seeking real howto advice from the editors and photographers of National Geographic. It is carefully designed to lead the amateur photographer to better pictures and is comprehensive in scope,explaining the entire process from choosing a camera to taking the pictures to printing,scanning,and archiving the images.

F. New York: Destination Music CD

Innovative artists continue New York's cabaret tradition.

$19.95

It's Showtime!

Song Titles:

"Manhattan" - Bobby Short

"Mr. Paganini" - Ann Hampton Callaway

"Taking a Chance on Love" - Karen Mason

"I Gotta Right Sing the Blues" - Audrey Lavine

"Just the Way You Look Tonight" - Betty Buckley

"Mountain Greenery" - Billy Stritch

"Autumn in New York" - Christine Andreas

"Blue Grass" KT Sullivan

"Harlem on My Mind" - Mary Cleere Haran

"The Man I Love" - Julie Wilson

"Goodnight New York" - Andrea Marcovicci

下面是读者的简要内容.请把相关的内容与它们的书名匹配起来.

1. Hinny is filled with hope and inspiration to celebrate and protect the world's environments. Looking

through the book,he knows that every beautiful sight that meets his eyes is a precious dreamland worth

preserving a special place that feels like Heaven on Earth.

2. Jumpy is pleased that his newlybought book is a fascinating colorful guide to all the birds on the planet,

their identification,structures and plumages,habitats,behaviors,and ranges.

3. Pope is using a film camera for his parttime photographs by means of his guide photography. From

creative gift ideas to quality camera phone photography,he is armed with the practical knowhow to get

great images.

4. Jackson will get a wealth of ideas for making adventure a part of his life with the magazine! He likes

every issue of this magazine packed with breathtaking photography and compelling features on topics such as diving,snorkeling,skydiving,hang gliding,kayaking,rafting,sailing,climbing,hiking,and more.

5. Dingy is invited to join an excursion into the rich rhythms and textures of music from the far reaches of

the world. He enjoys the diverse mix of memorable music from these special corners of the Earth as he

browses through some of the fascinating cultural facts and maps of each region and then sets off for his

destination!

患者男性，45岁，因“进食刺激性食物后口腔黏膜疼痛5个月”来诊。口腔检查：左颊后份及前庭沟黏膜见局限性白色网纹，轻度充血，未见糜烂，与黏膜病损对应的牙颊侧牙颈部见银汞合金充填物。可能的诊断是（）

A.口腔扁平苔藓

B.慢性盘状红斑狼疮

C.苔藓样反应

D.过敏性接触性口炎

E.口腔白色念珠菌病

依据华电集团《电力安全生产奖惩管理办法》，安全生产奖惩工作坚持什么原则？