题目内容

A life of slothful ease, a life of that peace which springs merely from lack either of desire or of power to strive after great things, is as little worthy of a nation as an individual. We do not admire the man of timid peace. We admire the man who embodies victorious efforts, the man who never wrongs his neighbor, who is prompt to help a friend, but who has those virile qualities necessary to win in the stern strife of actual life. It is hard to fail, but it is worse never to have tried to succeed. In this life we get nothing save by effort. Freedom from effort in the present merely means that there has been effort stored up in the past. A man can be freed from the necessity of work only by the fact that he or his fathers before him have worked to good purpose. If the freedom thus purchased is used aright, and the man still does actual work, though of a different kind, whether as a writer or a general, whether in the field of politics or in the field of exploration and adventure, he shows he deserves his good fortune.

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不能发生羟肟酸铁呈色反应的药物药物是

A. 阿莫西林
B. 氨苄西林
C. 头孢氨苄
D. 普鲁卡因青霉素
E. 青霉胺

青霉素分子中最不稳定的部位是

A. 酰胺基
B. β一内酰胺环
C. 羧基
D. 苯环
E. 苄基

柯柏反应是指雌性激素与

A. 水一乙醇反应
B. 硫酸一乙醇反应
C. 乙醇一乙酸乙酯反应
D. 乙醇一丙酮反应
E. 苯一乙酸乙酯反应

《中国药典》(2010年版)收载的甾体激素类药物的含量测定方法大多是

A. 异烟肼比色法
B. 四氮唑比色法
C. 紫外分光光度法
D. HPLC法
E. 薄层色谱法

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