向银行借款50万元偿还以前所欠货款（）。 A.一项负债增加，另一项负债减少 B.一项

患者，女性，17岁，月经未来潮， * * 未发育，因四肢无力查血钾2.2mmol/L，血压150/90mmHg。

患者CT检查示双肾上腺增生，B超提示子宫缺如，考虑患者可能为（）。

A.特醛症

B.皮质醇增多症

C.盐皮质激素过多综合征

D.腺垂体功能减低

E.原发性高血压

建设项目业主对工程建设和管理具有较强的主动权和控制权，这属于()的特点。

A．业主方的自行项目管理

B．业主方委托项目管理

C．业主方与项目管理咨询单位合作

D．业主方与政府合作

如图所示，光滑的水平桌面处在方向竖直向下的匀强磁场中，桌面上平放着一根一端开口、内壁光滑的绝缘细管，细管封闭端有一带电小球，小球直径略小于管的直径，细管的中心轴线沿y轴方向。在水平拉力F作用下，试管沿x轴方向匀速运动，带电小球能从细管口处飞出。带电小球在离开细管前的运动过程中，关于小球运动的加速度a、沿y轴方向的速度v_y、拉力F以及管壁对小球的弹力做功的功率P随时间t变化的图象分别如图所示，其中正确的是

A．

B．

C．

D．

阅读理解。

                                                              Submission Guidelines

     Before sending us a manuscript (稿件), look through recent issues (刊物) of the Post to get an idea of the

range and style of articles we publish. You will discover that our focus has broadened to include well-researche

d, timely and informative articles on finance, home improvement, travel, humor, and many other fields.

     The post's goal is to remain unique, with content that provides additional understandings on the ever-evolving

American scene.

     In addition to feature-length (专题长度的) article, the Post buys anecdotes, cartoons, and photos. Payment

ranges from $25 to $400.

     Our nonfiction needs include how-to, useful articles on gardening, pet care and training, financial planning,

and subjects of interest to a 45-plus, home-loving readership. For nonfiction articles, indicate any special

qualifications you have for writing about the subject, especially scientific material indicate one or two published

pieces with your article. We prefer typed articles between 1,000 and 2,000 words in length. We encourage you

to send both printed and online versions.

     We also welcome new fiction. A light, humorous touch is appreciated. We are always in need of straight

humor articles. Make us laugh, and we'll buy it. Feature articles average about 1,000 to 2,000 words. We like

positive, fresh angles to Post articles, and we ask that they be thoroughly researched.

     We normally respond to article submissions within six weeks. You are free to submit the article elsewhere

at the same time.

     Please submit all articles to Features Editor, the Saturday Evening post, 1100 Waterway Boulevard,

Indianapolis, IN 46202, (317) 634-1100.

1. Before sending a manuscript to the post, a contributor is advised to _____.

A. get a better understanding of American issues

B. find out the range of the articles in the Post

C. increase his knowledge in many fields

D. broaden his research focus

2. To submit nonfiction articles,a contributor must _____.

A. provide his special qualification

B. be a regular reader of the Post

C. produce printed version

D. be over 45 year old

3. From the passage we can learn that the Post _____.

A. allows article submission within six weeks

B. favor science articles within 2,000 words

C. have a huge demand for humorous works

D. prefers nonfiction to fiction article

温热药长期给药，可引起动物机体的变化是

A．痛阈值降低
B．心率减慢
C．脑内兴奋性神经递质含量降低
D．惊厥阈值升高
E．血清甲状腺激素水平降低