为防止本病发生胆红素脑病，制定治疗方案时，下列哪项是没有价值的（） A. 输白蛋白 B. 保持血pH正常范围 C. 维持动脉血二氧化碳分压正常 D. 选用抗生素 E. 光照疗法 参考答案:D
第5题: [单项选择]When I try to understand ______ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes. A. why it does B. what it does C. what it is D. why it is 参考答案:C 答案解析:“it is…that”是强调结构，可先排除A、B两项。that句中的 prevents 缺主语，排除D项。因此C项为正确答案。
第6题: [单项选择]下列的密钥技术中，属于非对称密钥技术的是 (55) 。 A. DES B. 3DES C. IDEA D. RSA 参考答案:D 答案解析:对称密钥技术是指加密系统的加密密钥和解密密钥相同，或者虽然不同，但从其中的任意一个可以很容易地推导出另一个。其优点是具有很高的保密强度，但密钥的传输需要经过安全可靠的途径。 对称密码技术有两
第36题: [单项选择]Where are the reading rooms located A. They are on the first and second floors. B. They are on the first floor. C. They are on the second floor. D. They are in the white building. 参考答案:A
