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问题 单项选择题

关于股骨头缺血坏死MRI显示的双线征的描述，哪项正确（）

A.在质子密度加权像显示最好

B.在T2加权像显示最好

C.条状高信号代表反应性硬化

D.条状低信号代表充血的肉芽组织

E.在T1加权像显示最好

答案

参考答案：B

填空题
我来当翻译（理解下列词语）  
1．叶公好龙：                                                                                                                              
2．龙飞凤舞：                                                                                                                              
3．龙腾虎跃：                                                                                                                              
4．变幻莫测：                                                                                                                                       
5．威力无比：                                                                                                                              
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单项选择题

当我们有多个对象选择时，要取消部分选定对象按（）键

A､SHIFT

B､ALT

C､CTRL

D､ESC
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