第7题: [单项选择]包裹性积液() A. X线示肋膈角变钝 B. X线示大片状、边缘模糊阴影 C. X线示斑片状、边缘模糊阴影 D. X线示凸面指向肺内呈"D"字征阴影 E. X线示上缘呈向外侧升高的反抛物线阴影 参考答案:D 答案解析:胸腔积液量在300ml以上时,立位X线胸片表现为肋膈角变钝,变平。
第30题: [单项选择]After being tested in many ways, this newly-designed machine will______in the near future. A. take place B. put into use C. come into use D. take action 参考答案:C 答案解析:本题考查动词短语。take place“发生;举行”;put into use“使用,利用”;come into use “开始被使用”;take action“采取行动”。句意为:经过几次测试,这款