完成下列作图 (1)请在图a中画出物体AB在平面镜中所成的像A′B′。 (2)如

题型:操作题

问题:

完成下列作图

(1)请在图a中画出物体AB在平面镜中所成的像A′B′。

(2)如图b所示,一束光射向凸透镜经折射后,折射光线射到一个平面镜上。请在图中画出射向凸透镜这束入射光和经平面镜反射的光路。

(3)如图c所示,OB是一束光由水中射入到空气中的折射光线,请画出在水中对应的入射光线AO的大致方向。

考点:平面镜成像的相关作图光的折射的光路图凸透镜对光的作用
题型:操作题

糖皮质激素的作用不包括()

A.抗炎

B.抗毒

C.抗免疫

D.抗菌

E.抗休克

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厨房空气中CO主要来自于()

A、汽车尾气进入

B、燃煤燃烧

C、煤气

D、香烟烟气

题型:操作题

变更工作负责人或增加工作任务,如工作票签发人无法当面办理,应通过电话联系,并在()上注明

A、工作票

B、工作票登记簿

C、值班记录簿

题型:操作题

Which is NOT a mandatory part of the shipboard Oil Pollution Emergency Plan?()

A.Reporting requirements

B.Diagrams

C.Steps to control a discharge

D.National and local coordination

题型:操作题

Washington, DC has traditionally been an unbalanced city when it comes to the life of the mind. It has great national monuments, from the Smithsonian museums to the Library of Congress. But day-to-day cultural life can be thin. It attracts some of the country’s best brains. But far too much of the city’s intellectual life is devoted to the minutiae of the political process. Dinner table conversation can all too easily turn to budget reconciliation or social security.

This is changing. On October 1st the Shakespeare Theatre Company opened a 775-seat new theatre in the heart of downtown. Sidney Harman hall not only provides a new stage for a theatre company that has hitherto had to make do with the 450-seat Lansburgh Theatre around the corner. It will also provide a platform for many smaller arts companies.

The fact that so many of these outfits are queuing up to perform is testimony to Washington’s cultural vitality. The recently-expanded Kennedy Centre is by some measures the busiest performing arts complex. But it still has a growing number of arts groups which are desperate for mid-sized space down- town. Michael Kahn, the theatre company’s artistic director, jokes that, despite Washington’s aversion (厌恶) to keeping secrets, it has made a pretty good job of keeping quiet about its artistic life. The Harman Centre should act as a whistle blower.

Washington still bows the knee to New York and Chicago when it comes to culture. But it has a good claim to be America’s intellectual capital. It has the greatest collection of think-tanks on the planet, and it regularly sucks in a giant share of the country’s best brains. Washington is second only to San Francisco for the proportion of residents twenty-five years and older with a bachelor’s degree or higher.

Washington’s intellectual life has been supercharged during the Bush years, despite the Decider’s aversion to ideas. September 11th, 2001, put questions of global strategy at the center of the national debate. Most of America’s intellectual centers are firmly in the grip of the left-liberal establishment. For all their talk of "diversity" American universities are allergic to a diversity of ideas. Washington is one of the few cities where conservatives regularly do battle with liberals. It is also the center of a fierce debate about the future direction of conservatism.

The danger for Washington is that this intellectual and cultural renaissance will leave the majority of the citizens untouched. The capital remains a city deeply divided between over-educated white itinerants and under- educated black locals. Still, the new Shakespeare theatre is part of job-generating downtown revival. Twenty years ago downtown was a desert of dilapidated(破旧的) buildings and bag people. Today it is bustling with life. If Washington is struggling to fix the world, at least it is making a reasonable job of fixing itself.

By mentioning the 9·11 terrorist attack in Paragraph 5, the author intends to ()

A. discuss the changes of Washington’s cultural life in Bush’s administration

B.indicate that Washington’s intellectual life is more developed than elsewhere

C. highlight the question of American global strategy in the national debate

D.draw a Comparison between American universities and Washington

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