A:Hi,longtimenosee,Dick.B:__________________
A. Thanks
B. Yes, how is it going?
C. I’m Helen. Nice to meet you.
D. You're welcome.
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A:Hi,Tom.Howareyou?B:__________________
A. Great. Thank you. And you?
B. Yes, I am.
C. How are you?
D.How do you do?
A:Gladtoseeyouagain.B:__________________
A. Thanks.
B. How do you do?
C. How are you?
D. Glad to see you, too.
A:Howarethingsgoinginyourcompany?B:__________________
A. Pleased to meet you.
B.How are you?
C. Not bad.
D. Not at all.
心包在MRI上的影像表现正确的有（）
A、壁层心包因有足够的厚度所以可以在MRI显示
B、舒张期的心包厚度小于收缩期的心包厚度
C、靠近心尖层面上心包膜的厚度最大
D、壁层心包在T1WI上呈低信号而在T2WI呈高信号
E、在壁层心包周围纵隔内脂肪的高信号和脏层心包下心表面脂肪高信号的衬托下，心包膜表现为介于二者之间的低信号弧线影
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