第7题: [单项选择]()is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy. A. SafetyNET B. NAVTEX C. NAVAREA D. VHF R/T 参考答案:B
第18题: [单项选择]高血压伴有低血钾应首先考虑() A. 主动脉缩窄 B. 原发性醛固酮增多症 C. 嗜铬细胞瘤 D. 继发于慢性肾炎的高血压 E. 肾动脉狭窄 参考答案:B 答案解析:原发性醛固酮增多症是由于肾上腺皮质病变致醛固酮分泌增多,肾素-血管紧张素活性受抑,临床表现为高血压、低血钾、碱血症、碱性尿为特征的一组继发性高血压。对同时有高血压、低血钾患者应疑为原发性醛固酮增多症。
第20题: [单项选择]At first, the speaker was referring to the problem of pollution in the country but halfway in her speech, she suddenly ______ to another subject. A. committed B. favored C. switched D. transmitted 参考答案:C 答案解析:题意是:起初,演讲者提到该国的污染问题,但是在其演讲中途,她突然到另一个话题。[C]switched“转换,改变(话题,思路等)”,符合题意。[A] committed“犯(罪),委托”,[B]fav