单选题A．血管升压素B．醛固酮C．一氧化氮D．肾上腺素E．内皮素

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A．酶促降解B．末梢重摄取C．进入突触后细胞D．被神经胶质细胞摄取E．被细胞所稀释

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.

单选题对于未成年人脑电图安静时的主要波形变化，恰当的描述是

单选题易发生出血性梗死的器官是

单选题刺激迷走神经，其末梢释放乙酰胆碱，可以引起( )(1995年)

单选题支配心脏的副交感神经节前神经元位于

单选题细菌蛋白的翻译过程包括①mRNA，起始因子，以及核蛋白体亚基的结合；②氨基酸活化；③肽键的形成；④肽酰-tRNA移位；⑤GTP，延长因子以及氨基酰-tRNA结合在一起等步骤。它们出现的恰当月顺序是

单选题若测定两个个体的呼吸商相同，则说明这两个个体的

单选题A．减压病B．脾梗死C．心脏破裂D．槟榔肝

单选题下列选项中，符合黏膜相关淋巴组织淋巴瘤叙述的是

单选题下列哪种疾病不易引起玻璃样变性

单选题生理情况下，人的中心静脉压升高时见于( )(2011年)

单选题A．基因载体的选择与构建B．外源基因与载体的拼接C．重组DNA分子导入受体细胞D．筛选并无性繁殖含重组分子的受体细胞E．表达目的基因编码的蛋白质

单选题IP 3 与相应受体结合后，可使细胞质内哪种离子浓度升高

单选题大肠癌最常见的好发部位是

单选题血中激素浓度虽低但生理作用很明显，其原因是

单选题关于RNA的生物合成，正确的是