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单选题 5. 5-氟尿嘧啶的抗癌作用机制是
学科：默认课程
时间：2026-04-22 15:14:17
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题目1单选题
Heart failure__________A. is a common and potentially fatal conditionB. has attacked nearly 8 million people around China by the end of 2014C. has attacked around 2% of adults over the age of 65 in developing countriesD. A
题目2单选题
What statement is true about left heart failureA. It occurs when the left ventricle cannot pump blood returning from the lungs into the arterial circulationB. When it occurs, the blood backs up into the body tissue and leads to dependent edemaC. It is due to the weakness in the right ventricle and subsequent inability to circulate thesystematic circulation and results in pulmonary edema
题目3单选题
What is the principle of treatment about heart failureA. People with heart failure due to left ventricular dysfunction, should make lifestyle modifications and dietary changesB. People with chronic stable mild heart failure, angiotensin along with beta blockers arerecommendedC. Treatment of heart failure depends on the severity and cause of the disease
题目4单选题
How should the nurse do to care for a heart failure patientA. Mask oxygen inhalation is administered at 2 to 6L/minB. He nurse should improve existing alternations in cardiac outputC. The nurse should try to increase fluid volumes
题目5单选题
一、选择题 A型题 1.嘌呤环中C4、C5和N7来自于下列哪种化合物A. 甘氨酸B. 一碳单位C. 谷氨酰胺D. 天冬氨酸E. CO2
题目6单选题
2.体内进行嘌呤核苷酸从头合成最主要的组织是A. 胸腺B. 小肠黏膜C. 肝D. 脾E. 骨髓
题目7单选题
3.嘌呤核苷酸从头合成时首先生成的是A. GMPB. AMPC. IMPD. ATPE. GTP
题目8单选题
4.胸腺嘧啶的甲基来自A. N10-CHOFH4B. N5,N10=CH-FH4C. N5,N10-CH2-FH4D. N5-CH3FH4E. N5-CH=NHFH4
题目9单选题
5. 5-氟尿嘧啶的抗癌作用机制是A. 合成错误的DNAB. 抑制尿嘧啶的合成C. 抑制胞嘧啶的合成D. 抑制胸苷酸的合成E. 抑制二氢叶酸还原酶
题目10单选题
6. 哺乳类动物体内直接催化尿酸生成的酶是A. 尿酸氧化酶B. 黄嘌呤氧化酶C. 腺苷脱氨酶D. 鸟嘌呤脱氨酶E. 核苷酸酶
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