单选题病理学对人体病变的诊断和研究方法常用的是______

单选题不符合肝棘球蚴囊肿的描述是

单选题细胞膜在静息情况下，对下列哪种离子通透性最大( ) A．K+ B．Na+ C．Cl- D．Ca2+ E．Mg2+

单选题压力感受性反射的生理意义在于( ) A．升高血压 B．降低血压 C．维持血压的稳态 D．增强呼吸 E．维持呼吸的稳态

单选题关于血浆渗透压的叙述，错误的是 A.血浆渗透压主要 Na+、Cl-产生 B.血浆渗透压约为300mmol/L C.血浆渗透压的高低取决于溶质颗粒的大小 D.血浆和组织液的晶体渗透压基本相同

单选题下列因素中，刺激抗利尿激素分泌最强的是( )(2007年)

单选题凝血因子Ⅱ、Ⅶ、Ⅸ、X在肝脏合成依赖于( )(2009年)

单选题哪种甲状腺肿瘤是由APUD细胞发生的( )(1994年)

单选题当刺激强度低于阈强度时，刺激可兴奋组织将( ) A．不引起任何反应 B．引起电紧张I生扩布的局部兴奋 C．引起呈衰减传导的动作电位 D．引起无衰减传导的局部兴奋 E．引起可传导的动作电位

单选题原位癌的特点不包括______

单选题关于兴奋性突触后电位(EPSP)产生的叙述，哪一项是错误的( ) A．突触前轴突末梢去极化 B．Ca2+由膜外进入突触前膜内 C．突触小胞释放递质，并与突触后膜受体结合 D．突触后膜对Na+、K+、Ca2+，特别对K+的通透性升高 E．突触后膜产生去极化

单选题 单分体出现在 ( ) A、减数分裂后期I B、减数分裂中期Ⅱ C、减数分裂后期Ⅱ D、减数分裂前期Ⅱ E、减数分裂末期Ⅱ

单选题真核生物DNA复制时，减少染色体DNA5ˊ末端区降解或缩短的方式是

单选题肌的初长度取决于( ) A．前负荷 B．后负荷 C．前后负荷之间 D．前后负荷之差 E．主动张力大小

单选题A．肌凝蛋白B．肌纤蛋白C．肌钙蛋白D．钙调蛋白E．肌凝蛋白激酶

单选题用作衡量组织兴奋性高低的指标通常是

单选题 目前，遗传病的手术疗法主要包括 ( ) A、手术矫正和器官移植 B、器官组织细胞修复 C、克隆技术 D、推拿疗法 E、中医治疗

单选题第二性征的发育是指( ) A．生殖器官的发育 B．体态和身高的发育 C．男、女性所特有的外部特征 D．腋毛、阴毛的出现 E．音调的变化

单选题在生理情况下，对动脉血压影响不大的因素是

单选题After World War Ⅱ the glorification of an ever-larger GNP formed the basis of a new materialism, which became a sacred obligation for all Japanese governments, businesses and trade unions. Anyone who mentioned the undesirable by-products of rapid economic growth was treated as a heretic. Consequently, everything possible was done to make conditions easy for the manufacturers. Few dared question the wisdom of discharging untreated waste into the nearest water body or untreated smoke into the atmosphere. This silence was maintained by union leaders as well as by most of the country's radicals; except for a few isolated voices, no one protested. An insistence on treatment of the various effluents would have necessitated expenditures on treatment equipment that in turn would have given rise to higher operating costs. Obviously, this would have meant higher prices for Japanese goods, and ultimately fewer sales and lower industrial growth and GNP. The pursuit of nothing but economic growth is illustrated by the response of the Japanese government to the American educational mission that visited Japan in 1947. After surveying Japan's educational program, the Americans suggested that the Japanese fill in their curriculum gap by creating departments in chemical and sanitary engineering. Immediately, chemical engineering departments were established in all the country's universities and technical institutions. In contrast, the recommendation to form sanitary engineering departments was more or less ignored, because they could bring no profit. By 1960, only two second-rate universities, Kyoto and Hokkaido, were interested enough to open such departments. The reluctance to divert funds from production to conservation is explanation enough for a certain degree of pollution, but the situation was made worse by the type of technology the Japanese chose to adopt for their industrial expansion. For the most part, they simply copied American industrial methods. This meant that methods originally designed for use in a country that stretched from the Atlantic to the Pacific with lots of air and water to use as sewage receptacles were adopted for an area a fraction of the size. Moreover, the Japanese diet was much more dependent on water as a source of fish and as an input in the irrigation of rice; consequently discharged wastes built up much more rapidly in the food chain.