第5题: [单项选择]当满足以下()条件时,即进入冬期施工。 A. 当室外日平均气温连续5天稳定低于0℃,或最低气温低于-5℃ B. 当室外日平均气温连续5天稳定低于-3℃,或最低气温低于-5℃ C. 当室外日平均气温连续5天稳定低于5℃,或最低气温低于-3℃ D. 当室外日平均气温连续5天稳定低于0℃,或最低气温低于-3℃ 参考答案:C
第27题: [单项选择]The old farmer was run down by a car. He was taken to the hospital and______ on by the chief surgeon right now. A. operated B. having been operated C. is operated D. is being operated 参考答案:D 答案解析:operated与并列连词and前的过去分词taken 共用一个系动词was,但这后一个过去分词的时间却为“right now”,“现在;眼下”,因此,operated 不符合题意。B项为现在分词的完
第28题: [单项选择]下列有关胸前区叩击的次数和高度叙述正确的是 A. 1次,20~30cm B. 1次,30~50cm C. 2次,20~30cm D. 2次,30~50cm E. 2次,15~25cm 参考答案:A