冠状动脉弥漫狭窄是指狭窄长度()
A.大于10mm
B.大于15mm
C.大于20mm
D.大于25mm
E.大于30mm
参考答案:C
解析:冠状动脉弥漫性狭窄长度大于20mm。
FLAIR序列的主要特点是()
A、扫描速度快。
B、很好的T1对比。
C、很好的T2对比。
D、脑脊液的信号得到有效抑制。
E、采用短的T1。
— What do you think of your brother's son?
— He _____ be very naughty but at the same time you _____ help liking him. [ ]
A. will; will
B. won't; can't
C. may; may
D. can; can't