| There is a great deal of controversy within the
medical profession regarding the use and value of the coronary bypass procedure,
and for more than eight years the American Heart Association has discussed the
question at its regular scientific sessions. The bypass operation consists of open heart surgery in which the physician takes a vein from the patient’s leg and implants it near the heart to construct a passage around the blockage in a clogged artery so that blood can flow freely by. The operation performed on about 100,000 persons a year in the US and costs approximately $10,000. The procedure is designed to relieve tie pain of angina pectoris which occurs when the blood supply’s obstructed and also to allow the patient more freedom of sustained activity. In persons with advanced heart disease and blockage in severa A. is a better way of prolonging one’s life B. is the only solution to the blockage of one artery C. should be used to prevent advanced diseases D. has no effect at all on serious patients [单选题]知 母与天花粉、麦冬等配伍可治疗( )
A.甲状腺功能亢进 B.糖尿病 C.胰腺炎 D.胆囊炎 [单项选择]氨基糖苷类抗生素的主要作用机制是
A. 抑制细菌细胞壁的合成 B. 干扰细菌的叶酸代谢 C. 作用于细菌核蛋白体50S亚基，干扰蛋白质的合成 D. 作用于细菌核蛋白体30S亚基，干扰蛋白质的合成 E. 干扰细菌DNA的合成 [判断题]2.58 汽车、摩托车、半挂车、2012年9月1日起出厂的中置轴挂车和2014年9月1日起出厂的牵引杆挂车应具有唯一的车辆识别代号，且应至少有一个车辆识别代号打刻在车架（无车架的机动车为车身主要承载且不能拆卸的部件）能防止锈蚀、磨损的部位上。
A.正确 B.错误 [名词解释]会计人员
[简答题]婴儿最好、最营养的食物是什么？
[判断题]严禁带负荷断、接引线。
[单选题]在厂站带电区域或临近带电体的起重作业时，起重机械应安装接地装置，接地线应用多股软铜线，截面不应小于()，并满足接地短路容量的要求。
A.16mm2 B.18mm2 C.20mm2 D.25mm2 [单选题]4G表示？
A.数字通信 B.多媒体业务 C.无所不在的业务环境 D.动态无线资源管理 我来回答: 提交
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