下列哪项可用来衡量心肌自动节律性的高低A.动作电位的幅值 B.最大复极电位水平 C.

题型:单项选择题

问题:

下列哪项可用来衡量心肌自动节律性的高低

A.动作电位的幅值

B.最大复极电位水平

C.自动兴奋的频率

D.阈电位水平

E.4期膜电位自动去极化速率

考点:普通考研西医综合全国硕士研究生入学统一考试西医综合真题1998年
题型:单项选择题

– I’m sorry I didn’t attend your birthday party because my mother was ill.

-- ________. Is your mother better now?

A.Forget it

B.Go ahead

C.Come on

D.Take your time

题型:单项选择题

报纸每期发布的酒类广告,依法不得超过二条,并且不得发布在报纸的()

A、第一版

B、第二版

C、第三版

D、第四版

题型:单项选择题

May : Happenings from the past  

May 5,1884

Isaac Murphy , son of a slave and perhaps the greatest horse rider in American history , rides Buchanan to win his first Kentucky Derby . He becomes the first rider ever to win the race three times .

May 9 , 1754

Benjamin Franklin’s Pennsylvania Gazette produces perhaps the first American political cartoon (漫画), showing a snake cut in pieces, with the words “ Join or Die” printed under the picture.

May 11,1934

The first great dust storm of the Great Plains Dust Bowl , the result of years of drought(干旱),blows topsoil all the way to New York City and Washington , D.C. .

May 19, 1994

Jacqueline Lee Bouvier Kennedy Onassis , former first lady and one of the most famous people of the 1960s , died of cancer in New York City at the age of 64 .

May 24, 1844

Samuel F.B. Morsr taps out the first message , “ What Hath God Wrought ,” over the experimental long-distance telegraph line which runs from Washington, D.C. , to Baltimeore , Md .

1. We know from the text that Buchanan is_____________.

A Isaac”s father                 B a winnning horse

C.a slave taking care if horses      D.the first racing horse in Kentucky

2. What is the title of the first American political cartoon ?

A.Join or Die                   B.Pennsylvania Gazette

C.What Hath God Wrought        D.Kentucky Derby

3. In which year did the former first lady Jacqueline die ?

A. 1934        B. 1960       C . 1964       D. 1994

4.Which of the following places has to do with the first telegram in history ?

A. Washington , D. C.             B. New York City

C. Kentucky.                    D.  Pennsylvania

题型:单项选择题

女性,30岁。低热伴关节肿痛3个月,轻度贫血,抗核抗体(+),抗双链DNA抗体(+),疑患系统性红斑狼疮,治疗首选的药物是

A.非甾体抗炎药

B.抗生素

C.免疫抑制剂

D.糖皮质激素

E.柳氮磺胺吡啶

题型:单项选择题

室外给水铸铁管连接一般都采用承插连接,为了接生口造价,目前多采用石棉水泥接口。

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