一、选择题 A型题 1.d2.c3.e4.e5.d6.a7.e8.c9.c10.b11.d12.a 13.b14.a15.d16.e17.e18.e19.c20.c21.b22.d 23.c24.c25.c26.d27.e8.c29.c30.c31.b32.b 33.c34.b35.c36.d37.e38.e39.c40.c41.b42.c

一、选择题 A型题 1.e2.c3.d4.a5.e6.b7.e.e.d10.c11. 12.d13.d14.a5.c16.b17.c18.a19.e20.a21.a22.a 23.c24.e25.d26.c27.b28.b2.b30.e31.c32.c33.a

一、选择题 A型题 1.c2.c3.c4.b25.b6.c7.a.d9.a10.b11.a12.d13.c 14.c15.d16.e17.a18.a19.c20.21.d22.d23.a24.b

一、选择题 A型题 1.d2.d3.d4.e5.d6.7.b8.d9.c10.a11 12.d13.d14.c15.b16.e17.d18.C19.d20.c21.a22.c 23.b24.c25.a26.b27.e28.b29.c30.d31.a32.d33.d 34.d35.c36.c37.a38.d39.b40

realized that the immune system could go awry and, instead of reacting against foreign antigens, could focus its attack on self-antigens. He termed this con- dition\horror autotoxicus \We now understand that while mechanisms of self-tolerance normally protect an individual from potentially self-reactive lymphocytes, there are failures They result in an inappropriate response of the immune system against self-components termed autoimmunity In the 1960s, it was believed that all self-reactive lymphocytes

20.1晶闸管 20.2可控整流电路 20.3晶闸管的保护 20.4单结晶体管触发电路 20.5应用举例

机电系统就是机电一体化系统,机电一体化系统是光、机、电、液、控制技术 和软件技术集成起来而形成的复杂系统。 机电一体化(mechatronics)一词是机械(mechanics)和电子electronics)两 个词的合成词,20世纪70年代中期由日本首先开始使用,现在已得到欧美各国的普 遍认同,并得到广泛使用。近年来,随处可见许多以前仅有机械结构实现运动的装 置,通过与电子、软件技术相结合而得到显著改进和提高的实例

改革开放以来,尽管我国经济发展波动较大,但经济增长速度总体 上很快。1978~2003年,我国国内生产总值(GDP)年均增长9.4% 与中国香港、日本、韩国、中国台湾和新加坡在经济起飞时期的20年 (1961~1981年)相比,中国的GDP稍低于中国台湾水平(此间台湾 增长10.0%),与中国香港(9.6%)、新加坡(.5%)增长率相当,高于 日本增长率2个百分点。如果作同期对比,在1978~2003年这25年 间,我国的经济增长无疑是世界上最快的也明显快于亚洲四小龙和日 本。特别是1998年亚洲金融危机以来,世界各国经济增长普遍低迷

3.1 Amino Acids 75 acids, covalently linked in characteristic linear sequences 3.2 Peptides and Proteins 85 Because each of these amino acids has a side chain with 3.3 Working with Proteins 89 distinctive chemical properties, this group of 20 pre cursor molecules may be regarded as the alphabet in

PIHs is an acute or specific hypertension of pregnancy which is peculiar to pregnant or puerperal women Diagnosis of PIHs is made on the basis of development of hypertension with or without proteinuria ,edema ,or both after the twentieth week of gestation ,although the signs and symptoms may appear earlier with hydatidiform moles