第20题: [单项选择]大多数出血性肾囊肿因检查时处于出血的亚急性期(出血后1~2周)而在() A. T1WI上呈低信号,T2WI呈高信号 B. T1WI上呈高信号,T2WI呈低信号 C. T1WI和T2WI上均呈低信号 D. T1WI和T2WI上均呈高信号 E. T1WI和T2WI上均呈中等信号 参考答案:D 答案解析:出血性肾囊肿因检查时处于出血的亚急性期(出血后1~2周)而在磁共振表现为T1加权像与脂肪信号相似,呈高信号;T2加权像信号较脂肪信号高。B超可表现为无回声,
第34题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the conversation you have just heard.{{/B}} A. Go through a health check. B. Take little luggage with them. C. Arrive early for boarding. D. Undergo security cheeks. 参考答案:B 答案解析:[听力原文]
What is the special requirement for passengers traveling to the moon